Search

Find a vulnerability

Search criteria

    2 vulnerabilities found for Red Hat Directory Server 13.2 by Red Hat

    CVE-2026-9064 (GCVE-0-2026-9064)

    Vulnerability from nvd – Published: 2026-05-20 09:00 – Updated: 2026-06-30 12:05
    VLAI
    Title
    389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)
    Summary
    A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26452 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26453 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26454 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26455 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26456 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26457 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26458 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26459 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26460 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26461 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26463 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26464 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26465 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26597 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26599 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26639 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:27125 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-9064 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2480093 issue-trackingx_refsource_REDHAT
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8 Unaffected: 8060020260609102432.0ca98e7e , < * (rpm)
        cpe:/a:redhat:directory_server_e4s:11.5::el8
    Create a notification for this product.
    Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8 Unaffected: 8080020260610130252.f969626e , < * (rpm)
        cpe:/a:redhat:directory_server_e4s:11.7::el8
    Create a notification for this product.
    Red Hat Red Hat Directory Server 11.9 for RHEL 8 Unaffected: 8100020260601104139.37ed7c03 , < * (rpm)
        cpe:/a:redhat:directory_server:11.9::el8
    Create a notification for this product.
    Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9 Unaffected: 9020020260615123354.1674d574 , < * (rpm)
        cpe:/a:redhat:directory_server_e4s:12.2::el9
    Create a notification for this product.
    Red Hat Red Hat Directory Server 12.4 E4S for RHEL 9 Unaffected: 9040020260611130021.1674d574 , < * (rpm)
        cpe:/a:redhat:directory_server_e4s:12.4::el9
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:3.2.0-7.el10_2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:3.0.6-18.el10_0 , < * (rpm)
        cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.3.11.1-12.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 8100020260601102239.25e700aa , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 8040020260609102422.96015a92 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 8040020260609102422.96015a92 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 8060020260609102416.824efc52 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 8060020260609102416.824efc52 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 8080020260610125847.6dbb3803 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 8080020260610125847.6dbb3803 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.8.0-7.el9_8 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:2.2.4-18.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:2.4.5-25.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:2.6.1-21.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Directory Server 13.2 Unaffected: 1781714123 , < * (rpm)
        cpe:/a:redhat:directory_server:13.2::el10
    Create a notification for this product.
    Red Hat Red Hat Directory Server 12     cpe:/a:redhat:directory_server:12
    Create a notification for this product.
    Red Hat Red Hat Directory Server 13     cpe:/a:redhat:directory_server:13
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Directory Server 11.9 for RHEL 8     cpe:/a:redhat:directory_server:11.9::el8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.4)     cpe:/a:redhat:rhel_aus:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)     cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.6)     cpe:/a:redhat:rhel_aus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)     cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.8)     cpe:/a:redhat:rhel_e4s:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.8)     cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8     cpe:/a:redhat:directory_server_e4s:11.5::el8
    Create a notification for this product.
    Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8     cpe:/a:redhat:directory_server_e4s:11.7::el8
    Create a notification for this product.
    Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9     cpe:/a:redhat:directory_server_e4s:12.2::el9
    Create a notification for this product.
    Red Hat Red Hat Directory Server 12.4 E4S for RHEL 9     cpe:/a:redhat:directory_server_e4s:12.4::el9
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Directory Server 13.2     cpe:/a:redhat:directory_server:13.2::el10
    Create a notification for this product.
    Date Public
    2026-05-20 07:30
    Credits
    Red Hat would like to thank Oleh Konko (1seal.org) for reporting this issue.
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-9064",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-05-20T13:40:32.480479Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-05-20T13:41:09.059Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          },
          {
            "affected": [
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_els:7"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux Server (v. 7 ELS)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_els:7"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux Server Optional (v. 7 ELS)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server:11.9::el8"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 11.9 for RHEL 8",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux_eus:10.0"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:10.2"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 10)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:enterprise_linux:8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_aus:8.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream AUS (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_aus:8.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream AUS (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_e4s:8.8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream E4S (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_tus:8.8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream TUS (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_e4s:9.2::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream E4S (v.9.2)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_e4s:9.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream E4S (v.9.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus:9.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS (v.9.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:enterprise_linux:9::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 9)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server_e4s:11.5::el8"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 11.5 E4S for RHEL 8",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server_e4s:11.7::el8"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 11.7 E4S for RHEL 8",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server_e4s:12.2::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 12.2 E4S for RHEL 9",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server_e4s:12.4::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 12.4 E4S for RHEL 9",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux_eus:10.0"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:10.2"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus:9.6::crb"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat CodeReady Linux Builder EUS (v.9.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:enterprise_linux:9::crb"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server:13.2::el10"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 13.2",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server:12"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 12",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server:13"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 13",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:6"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux 6",
                "vendor": "Red Hat"
              }
            ],
            "datePublic": "2026-05-20T07:30:00.000Z",
            "descriptions": [
              {
                "lang": "en",
                "value": "A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service."
              }
            ],
            "metrics": [
              {
                "other": {
                  "content": {
                    "namespace": "https://access.redhat.com/security/updates/classification/",
                    "value": "Important"
                  },
                  "type": "Red Hat severity rating"
                }
              },
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "HIGH",
                  "baseScore": 7.5,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "version": "3.1"
                },
                "format": "CVSS"
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-770",
                    "description": "Allocation of Resources Without Limits or Throttling",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-06-30T12:05:57.937Z",
              "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
              "shortName": "redhat-SADP"
            },
            "references": [
              {
                "tags": [
                  "vdb-entry",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/security/cve/CVE-2026-9064"
              },
              {
                "name": "RHBZ#2480093",
                "tags": [
                  "issue-tracking",
                  "x_refsource_REDHAT"
                ],
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480093"
              },
              {
                "tags": [
                  "x_sadp-csaf-vex"
                ],
                "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9064.json"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26453"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26458"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26457"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26456"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26459"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26463"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26460"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26454"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26452"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26464"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26465"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26455"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26461"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26597"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26639"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26599"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:27125"
              }
            ],
            "solutions": [
              {
                "lang": "en",
                "value": "RHSA-2026:26453: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26458: Red Hat Directory Server 11.9 for RHEL 8"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26457: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26456: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26459: Red Hat Enterprise Linux AppStream (v. 8)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26463: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26460: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26454: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26452: Red Hat Enterprise Linux AppStream E4S (v.9.2)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26464: Red Hat Enterprise Linux AppStream E4S (v.9.4)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26465: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26455: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26461: Red Hat Directory Server 11.5 E4S for RHEL 8"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26597: Red Hat Directory Server 11.7 E4S for RHEL 8"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26639: Red Hat Directory Server 12.2 E4S for RHEL 9"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26599: Red Hat Directory Server 12.4 E4S for RHEL 9"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:27125: Red Hat Directory Server 13.2"
              }
            ],
            "timeline": [
              {
                "lang": "en",
                "time": "2026-03-05T00:00:00.000Z",
                "value": "Reported to Red Hat."
              },
              {
                "lang": "en",
                "time": "2026-05-20T07:30:00.000Z",
                "value": "Made public."
              }
            ],
            "title": "389-ds-base: 389-ds-base: unbounded LDAP controls count in get_ldapmessage_controls_ext() causes CPU and heap amplification (remote DoS)",
            "workarounds": [
              {
                "lang": "en",
                "value": "Restrict network access to the LDAP port (389/tcp, 636/tcp) to trusted networks only using firewall rules or network ACLs. This prevents untrusted remote attackers from reaching the vulnerable code path.\n\nOptionally, lower the nsslapd-maxbersize configuration parameter to reduce the maximum BER message size accepted by the server. Note that this caps bytes, not the number of controls, and does not fully eliminate the amplification. Setting it too low may impact legitimate LDAP operations with large payloads."
              }
            ],
            "x_adpType": "supplier",
            "x_generator": {
              "engine": "sadp-cli 1.0.0"
            }
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server_e4s:11.5::el8"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:11",
              "product": "Red Hat Directory Server 11.5 E4S for RHEL 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8060020260609102432.0ca98e7e",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server_e4s:11.7::el8"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:11",
              "product": "Red Hat Directory Server 11.7 E4S for RHEL 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8080020260610130252.f969626e",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server:11.9::el8"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:11",
              "product": "Red Hat Directory Server 11.9 for RHEL 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8100020260601104139.37ed7c03",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server_e4s:12.2::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:12",
              "product": "Red Hat Directory Server 12.2 E4S for RHEL 9",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "9020020260615123354.1674d574",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server_e4s:12.4::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:12",
              "product": "Red Hat Directory Server 12.4 E4S for RHEL 9",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "9040020260611130021.1674d574",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:10.2"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 10",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.2.0-7.el10_2",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux_eus:10.0"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.0.6-18.el10_0",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:rhel_els:7"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:1.3.11.1-12.el7_9",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:8::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8100020260601102239.25e700aa",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8040020260609102422.96015a92",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8040020260609102422.96015a92",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8060020260609102416.824efc52",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8060020260609102416.824efc52",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8080020260610125847.6dbb3803",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8080020260610125847.6dbb3803",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:9::appstream",
                "cpe:/a:redhat:enterprise_linux:9::crb"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 9",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:2.8.0-7.el9_8",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:9.2::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:2.2.4-18.el9_2",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:9.4::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:2.4.5-25.el9_4",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_eus:9.6::appstream",
                "cpe:/a:redhat:rhel_eus:9.6::crb"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 9.6 Extended Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:2.6.1-21.el9_6",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:directory_server:13.2::el10"
              ],
              "defaultStatus": "affected",
              "packageName": "dirsrv/dirsrv-container-rhel10",
              "product": "Red Hat Directory Server 13.2",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781714123",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server:12"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:12/389-ds-base",
              "product": "Red Hat Directory Server 12",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server:13"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Directory Server 13",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:6"
              ],
              "defaultStatus": "unknown",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 6",
              "vendor": "Red Hat"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "Red Hat would like to thank Oleh Konko (1seal.org) for reporting this issue."
            }
          ],
          "datePublic": "2026-05-20T07:30:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Important"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-770",
                  "description": "Allocation of Resources Without Limits or Throttling",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-06-18T19:46:42.276Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "name": "RHSA-2026:26452",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26452"
            },
            {
              "name": "RHSA-2026:26453",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26453"
            },
            {
              "name": "RHSA-2026:26454",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26454"
            },
            {
              "name": "RHSA-2026:26455",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26455"
            },
            {
              "name": "RHSA-2026:26456",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26456"
            },
            {
              "name": "RHSA-2026:26457",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26457"
            },
            {
              "name": "RHSA-2026:26458",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26458"
            },
            {
              "name": "RHSA-2026:26459",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26459"
            },
            {
              "name": "RHSA-2026:26460",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26460"
            },
            {
              "name": "RHSA-2026:26461",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26461"
            },
            {
              "name": "RHSA-2026:26463",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26463"
            },
            {
              "name": "RHSA-2026:26464",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26464"
            },
            {
              "name": "RHSA-2026:26465",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26465"
            },
            {
              "name": "RHSA-2026:26597",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26597"
            },
            {
              "name": "RHSA-2026:26599",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26599"
            },
            {
              "name": "RHSA-2026:26639",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26639"
            },
            {
              "name": "RHSA-2026:27125",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:27125"
            },
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-9064"
            },
            {
              "name": "RHBZ#2480093",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480093"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-03-05T00:00:00.000Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-05-20T07:30:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)",
          "workarounds": [
            {
              "lang": "en",
              "value": "Restrict network access to the LDAP port (389/tcp, 636/tcp) to trusted networks only using firewall rules or network ACLs. This prevents untrusted remote attackers from reaching the vulnerable code path.\n\nOptionally, lower the nsslapd-maxbersize configuration parameter to reduce the maximum BER message size accepted by the server. Note that this caps bytes, not the number of controls, and does not fully eliminate the amplification. Setting it too low may impact legitimate LDAP operations with large payloads."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-770: Allocation of Resources Without Limits or Throttling"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-9064",
        "datePublished": "2026-05-20T09:00:42.557Z",
        "dateReserved": "2026-05-20T08:19:21.037Z",
        "dateUpdated": "2026-06-30T12:05:57.937Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    CVE-2026-9064 (GCVE-0-2026-9064)

    Vulnerability from cvelistv5 – Published: 2026-05-20 09:00 – Updated: 2026-06-30 12:05
    VLAI
    Title
    389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)
    Summary
    A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26452 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26453 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26454 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26455 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26456 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26457 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26458 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26459 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26460 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26461 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26463 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26464 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26465 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26597 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26599 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26639 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:27125 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-9064 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2480093 issue-trackingx_refsource_REDHAT
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8 Unaffected: 8060020260609102432.0ca98e7e , < * (rpm)
        cpe:/a:redhat:directory_server_e4s:11.5::el8
    Create a notification for this product.
    Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8 Unaffected: 8080020260610130252.f969626e , < * (rpm)
        cpe:/a:redhat:directory_server_e4s:11.7::el8
    Create a notification for this product.
    Red Hat Red Hat Directory Server 11.9 for RHEL 8 Unaffected: 8100020260601104139.37ed7c03 , < * (rpm)
        cpe:/a:redhat:directory_server:11.9::el8
    Create a notification for this product.
    Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9 Unaffected: 9020020260615123354.1674d574 , < * (rpm)
        cpe:/a:redhat:directory_server_e4s:12.2::el9
    Create a notification for this product.
    Red Hat Red Hat Directory Server 12.4 E4S for RHEL 9 Unaffected: 9040020260611130021.1674d574 , < * (rpm)
        cpe:/a:redhat:directory_server_e4s:12.4::el9
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:3.2.0-7.el10_2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:3.0.6-18.el10_0 , < * (rpm)
        cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.3.11.1-12.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 8100020260601102239.25e700aa , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 8040020260609102422.96015a92 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 8040020260609102422.96015a92 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 8060020260609102416.824efc52 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 8060020260609102416.824efc52 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 8080020260610125847.6dbb3803 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 8080020260610125847.6dbb3803 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.8.0-7.el9_8 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:2.2.4-18.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:2.4.5-25.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:2.6.1-21.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Directory Server 13.2 Unaffected: 1781714123 , < * (rpm)
        cpe:/a:redhat:directory_server:13.2::el10
    Create a notification for this product.
    Red Hat Red Hat Directory Server 12     cpe:/a:redhat:directory_server:12
    Create a notification for this product.
    Red Hat Red Hat Directory Server 13     cpe:/a:redhat:directory_server:13
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Directory Server 11.9 for RHEL 8     cpe:/a:redhat:directory_server:11.9::el8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.4)     cpe:/a:redhat:rhel_aus:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)     cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.6)     cpe:/a:redhat:rhel_aus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)     cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.8)     cpe:/a:redhat:rhel_e4s:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.8)     cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8     cpe:/a:redhat:directory_server_e4s:11.5::el8
    Create a notification for this product.
    Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8     cpe:/a:redhat:directory_server_e4s:11.7::el8
    Create a notification for this product.
    Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9     cpe:/a:redhat:directory_server_e4s:12.2::el9
    Create a notification for this product.
    Red Hat Red Hat Directory Server 12.4 E4S for RHEL 9     cpe:/a:redhat:directory_server_e4s:12.4::el9
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Directory Server 13.2     cpe:/a:redhat:directory_server:13.2::el10
    Create a notification for this product.
    Date Public
    2026-05-20 07:30
    Credits
    Red Hat would like to thank Oleh Konko (1seal.org) for reporting this issue.
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-9064",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-05-20T13:40:32.480479Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-05-20T13:41:09.059Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          },
          {
            "affected": [
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_els:7"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux Server (v. 7 ELS)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_els:7"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux Server Optional (v. 7 ELS)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server:11.9::el8"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 11.9 for RHEL 8",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux_eus:10.0"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:10.2"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 10)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:enterprise_linux:8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_aus:8.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream AUS (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_aus:8.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream AUS (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_e4s:8.8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream E4S (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_tus:8.8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream TUS (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_e4s:9.2::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream E4S (v.9.2)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_e4s:9.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream E4S (v.9.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus:9.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS (v.9.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:enterprise_linux:9::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 9)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server_e4s:11.5::el8"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 11.5 E4S for RHEL 8",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server_e4s:11.7::el8"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 11.7 E4S for RHEL 8",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server_e4s:12.2::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 12.2 E4S for RHEL 9",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server_e4s:12.4::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 12.4 E4S for RHEL 9",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux_eus:10.0"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:10.2"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus:9.6::crb"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat CodeReady Linux Builder EUS (v.9.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:enterprise_linux:9::crb"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server:13.2::el10"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 13.2",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server:12"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 12",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:directory_server:13"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Directory Server 13",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:6"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux 6",
                "vendor": "Red Hat"
              }
            ],
            "datePublic": "2026-05-20T07:30:00.000Z",
            "descriptions": [
              {
                "lang": "en",
                "value": "A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service."
              }
            ],
            "metrics": [
              {
                "other": {
                  "content": {
                    "namespace": "https://access.redhat.com/security/updates/classification/",
                    "value": "Important"
                  },
                  "type": "Red Hat severity rating"
                }
              },
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "HIGH",
                  "baseScore": 7.5,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "version": "3.1"
                },
                "format": "CVSS"
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-770",
                    "description": "Allocation of Resources Without Limits or Throttling",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-06-30T12:05:57.937Z",
              "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
              "shortName": "redhat-SADP"
            },
            "references": [
              {
                "tags": [
                  "vdb-entry",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/security/cve/CVE-2026-9064"
              },
              {
                "name": "RHBZ#2480093",
                "tags": [
                  "issue-tracking",
                  "x_refsource_REDHAT"
                ],
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480093"
              },
              {
                "tags": [
                  "x_sadp-csaf-vex"
                ],
                "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9064.json"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26453"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26458"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26457"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26456"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26459"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26463"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26460"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26454"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26452"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26464"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26465"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26455"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26461"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26597"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26639"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26599"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:27125"
              }
            ],
            "solutions": [
              {
                "lang": "en",
                "value": "RHSA-2026:26453: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26458: Red Hat Directory Server 11.9 for RHEL 8"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26457: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26456: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26459: Red Hat Enterprise Linux AppStream (v. 8)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26463: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26460: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26454: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26452: Red Hat Enterprise Linux AppStream E4S (v.9.2)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26464: Red Hat Enterprise Linux AppStream E4S (v.9.4)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26465: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26455: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26461: Red Hat Directory Server 11.5 E4S for RHEL 8"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26597: Red Hat Directory Server 11.7 E4S for RHEL 8"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26639: Red Hat Directory Server 12.2 E4S for RHEL 9"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26599: Red Hat Directory Server 12.4 E4S for RHEL 9"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:27125: Red Hat Directory Server 13.2"
              }
            ],
            "timeline": [
              {
                "lang": "en",
                "time": "2026-03-05T00:00:00.000Z",
                "value": "Reported to Red Hat."
              },
              {
                "lang": "en",
                "time": "2026-05-20T07:30:00.000Z",
                "value": "Made public."
              }
            ],
            "title": "389-ds-base: 389-ds-base: unbounded LDAP controls count in get_ldapmessage_controls_ext() causes CPU and heap amplification (remote DoS)",
            "workarounds": [
              {
                "lang": "en",
                "value": "Restrict network access to the LDAP port (389/tcp, 636/tcp) to trusted networks only using firewall rules or network ACLs. This prevents untrusted remote attackers from reaching the vulnerable code path.\n\nOptionally, lower the nsslapd-maxbersize configuration parameter to reduce the maximum BER message size accepted by the server. Note that this caps bytes, not the number of controls, and does not fully eliminate the amplification. Setting it too low may impact legitimate LDAP operations with large payloads."
              }
            ],
            "x_adpType": "supplier",
            "x_generator": {
              "engine": "sadp-cli 1.0.0"
            }
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server_e4s:11.5::el8"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:11",
              "product": "Red Hat Directory Server 11.5 E4S for RHEL 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8060020260609102432.0ca98e7e",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server_e4s:11.7::el8"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:11",
              "product": "Red Hat Directory Server 11.7 E4S for RHEL 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8080020260610130252.f969626e",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server:11.9::el8"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:11",
              "product": "Red Hat Directory Server 11.9 for RHEL 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8100020260601104139.37ed7c03",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server_e4s:12.2::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:12",
              "product": "Red Hat Directory Server 12.2 E4S for RHEL 9",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "9020020260615123354.1674d574",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server_e4s:12.4::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:12",
              "product": "Red Hat Directory Server 12.4 E4S for RHEL 9",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "9040020260611130021.1674d574",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:10.2"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 10",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.2.0-7.el10_2",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux_eus:10.0"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.0.6-18.el10_0",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:rhel_els:7"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:1.3.11.1-12.el7_9",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:8::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8100020260601102239.25e700aa",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8040020260609102422.96015a92",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8040020260609102422.96015a92",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8060020260609102416.824efc52",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8060020260609102416.824efc52",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8080020260610125847.6dbb3803",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds:1.4",
              "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "8080020260610125847.6dbb3803",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:9::appstream",
                "cpe:/a:redhat:enterprise_linux:9::crb"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 9",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:2.8.0-7.el9_8",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:9.2::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:2.2.4-18.el9_2",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:9.4::appstream"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:2.4.5-25.el9_4",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_eus:9.6::appstream",
                "cpe:/a:redhat:rhel_eus:9.6::crb"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 9.6 Extended Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:2.6.1-21.el9_6",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:directory_server:13.2::el10"
              ],
              "defaultStatus": "affected",
              "packageName": "dirsrv/dirsrv-container-rhel10",
              "product": "Red Hat Directory Server 13.2",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781714123",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server:12"
              ],
              "defaultStatus": "affected",
              "packageName": "redhat-ds:12/389-ds-base",
              "product": "Red Hat Directory Server 12",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:directory_server:13"
              ],
              "defaultStatus": "affected",
              "packageName": "389-ds-base",
              "product": "Red Hat Directory Server 13",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:6"
              ],
              "defaultStatus": "unknown",
              "packageName": "389-ds-base",
              "product": "Red Hat Enterprise Linux 6",
              "vendor": "Red Hat"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "Red Hat would like to thank Oleh Konko (1seal.org) for reporting this issue."
            }
          ],
          "datePublic": "2026-05-20T07:30:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Important"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-770",
                  "description": "Allocation of Resources Without Limits or Throttling",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-06-18T19:46:42.276Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "name": "RHSA-2026:26452",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26452"
            },
            {
              "name": "RHSA-2026:26453",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26453"
            },
            {
              "name": "RHSA-2026:26454",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26454"
            },
            {
              "name": "RHSA-2026:26455",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26455"
            },
            {
              "name": "RHSA-2026:26456",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26456"
            },
            {
              "name": "RHSA-2026:26457",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26457"
            },
            {
              "name": "RHSA-2026:26458",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26458"
            },
            {
              "name": "RHSA-2026:26459",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26459"
            },
            {
              "name": "RHSA-2026:26460",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26460"
            },
            {
              "name": "RHSA-2026:26461",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26461"
            },
            {
              "name": "RHSA-2026:26463",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26463"
            },
            {
              "name": "RHSA-2026:26464",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26464"
            },
            {
              "name": "RHSA-2026:26465",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26465"
            },
            {
              "name": "RHSA-2026:26597",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26597"
            },
            {
              "name": "RHSA-2026:26599",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26599"
            },
            {
              "name": "RHSA-2026:26639",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26639"
            },
            {
              "name": "RHSA-2026:27125",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:27125"
            },
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-9064"
            },
            {
              "name": "RHBZ#2480093",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480093"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-03-05T00:00:00.000Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-05-20T07:30:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)",
          "workarounds": [
            {
              "lang": "en",
              "value": "Restrict network access to the LDAP port (389/tcp, 636/tcp) to trusted networks only using firewall rules or network ACLs. This prevents untrusted remote attackers from reaching the vulnerable code path.\n\nOptionally, lower the nsslapd-maxbersize configuration parameter to reduce the maximum BER message size accepted by the server. Note that this caps bytes, not the number of controls, and does not fully eliminate the amplification. Setting it too low may impact legitimate LDAP operations with large payloads."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-770: Allocation of Resources Without Limits or Throttling"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-9064",
        "datePublished": "2026-05-20T09:00:42.557Z",
        "dateReserved": "2026-05-20T08:19:21.037Z",
        "dateUpdated": "2026-06-30T12:05:57.937Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }