Vulnerability-Lookup

UBUNTU-CVE-2026-49759 (CVE-2026-49759)

Vulnerability from osv_ubuntu – Published: 2026-06-10 16:17 – Updated: 2026-10-08 16:59 – Source website

Details

Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk. The sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service. A crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited. This issue affects OTP from OTP 17.0 before OTP 27.3.4.13, OTP 28.5.0.2, and OTP 29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP 17.0, corresponding to erts before 6.0, is affected is unknown.

Severity

8.8 (High)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

8.2 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

8.2 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-49759	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-49759	REPORT
	https://cna.erlef.org/cves/CVE-2026-49759.html	REPORT
	https://osv.dev/vulnerability/EEF-CVE-2026-49759	REPORT
	https://ubuntu.com/security/notices/USN-8901-1	ADVISORY

JSON

To clipboard

{
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        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
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CVE-2026-49759 (GCVE-0-2026-49759)

Vulnerability from cvelistv5 – Published: 2026-06-10 14:35 – Updated: 2026-09-24 20:41

Title

Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash

Summary

Severity

8.8 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

8.2 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-10 16:18 UTC

CWE

CWE-121 - Stack-based Buffer Overflow
CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Assigner

EEF CNA under the mitre root

CNA scorecard A 97/100 over 357 records in the last 180 days details

References

8 references

URL	Tags
https://github.com/erlang/otp/security/advisories…	vendor-advisoryrelated
https://cna.erlef.org/cves/CVE-2026-49759.html	related
https://osv.dev/vulnerability/EEF-CVE-2026-49759	related
https://www.erlang.org/doc/system/versions.html#o…	x_version-scheme
https://github.com/erlang/otp/commit/3983d4952843…	patch
https://access.redhat.com/security/cve/CVE-2026-49759	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2487607	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

6 products

Vendor	Product	Version
Erlang	OTP	Affected: 17.0 , < * (otp) cpe:2.3:a:erlang:erlang\/otp::::::::
Erlang	OTP	Affected: 6.0 , < * (otp) cpe:2.3:a:erlang:erlang\/otp::::::::
Erlang	OTP	Affected: 84adefa331c4159d432d22840663c38f155cd4c1 , < 3983d495284331c121f600a80bac9fcf4e16381e (git) Unaffected: 3983d495284331c121f600a80bac9fcf4e16381e , < * (git) cpe:2.3:a:erlang:erlang\/otp::::::::
Red Hat	Red Hat OpenStack Platform 16.2	cpe:/a:redhat:openstack:16.2
Red Hat	Red Hat OpenStack Platform 17.1	cpe:/a:redhat:openstack:17.1
Red Hat	Red Hat OpenStack Platform 18.0	cpe:/a:redhat:openstack:18.0

Date Public

2026-06-10 14:35

Credits

Zhang Delong Raimo Niskanen

Show details on NVD website

JSON

To clipboard

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              "confidentialityImpact": "LOW",
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              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
              "version": "3.1"
            },
            "format": "CVSS"
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-120",
                "description": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-17T12:04:38.340Z",
          "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
          "shortName": "redhat-SADP"
        },
        "references": [
          {
            "tags": [
              "vdb-entry",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2026-49759"
          },
          {
            "name": "RHBZ#2487607",
            "tags": [
              "issue-tracking",
              "x_refsource_REDHAT"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487607"
          },
          {
            "tags": [
              "x_sadp-csaf-vex"
            ],
            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49759.json"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-06-10T16:01:51.030Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-06-10T14:35:38.838Z",
            "value": "Made public."
          }
        ],
        "title": "erlang: Erlang OTP: Denial of Service via crafted SCTP ERROR chunk",
        "workarounds": [
          {
            "lang": "en",
            "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."
          }
        ],
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "modules": [
            "inet_drv"
          ],
          "packageName": "otp",
          "packageURL": "pkg:software-id/erlang.org/otp",
          "product": "OTP",
          "programFiles": [
            "erts/emulator/drivers/common/inet_drv.c"
          ],
          "programRoutines": [
            {
              "name": "sctp_parse_error_chunk"
            }
          ],
          "vendor": "Erlang",
          "versions": [
            {
              "changes": [
                {
                  "at": "27.3.4.13",
                  "status": "unaffected"
                },
                {
                  "at": "28.5.0.2",
                  "status": "unaffected"
                },
                {
                  "at": "29.0.2",
                  "status": "unaffected"
                }
              ],
              "lessThan": "*",
              "status": "affected",
              "version": "17.0",
              "versionType": "otp"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "modules": [
            "inet_drv"
          ],
          "packageName": "erts",
          "packageURL": "pkg:otp/erts?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp\u0026vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
          "product": "OTP",
          "programFiles": [
            "emulator/drivers/common/inet_drv.c"
          ],
          "programRoutines": [
            {
              "name": "sctp_parse_error_chunk"
            }
          ],
          "repo": "https://github.com/erlang/otp",
          "vendor": "Erlang",
          "versions": [
            {
              "changes": [
                {
                  "at": "15.2.7.9",
                  "status": "unaffected"
                },
                {
                  "at": "16.4.0.2",
                  "status": "unaffected"
                },
                {
                  "at": "17.0.2",
                  "status": "unaffected"
                }
              ],
              "lessThan": "*",
              "status": "affected",
              "version": "6.0",
              "versionType": "otp"
            }
          ]
        },
        {
          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "modules": [
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          "packageName": "erlang/otp",
          "packageURL": "pkg:github/erlang/otp",
          "product": "OTP",
          "programFiles": [
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          "programRoutines": [
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          ],
          "repo": "https://github.com/erlang/otp",
          "vendor": "Erlang",
          "versions": [
            {
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              "status": "affected",
              "version": "84adefa331c4159d432d22840663c38f155cd4c1",
              "versionType": "git"
            },
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "3983d495284331c121f600a80bac9fcf4e16381e",
              "versionType": "git"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eSCTP support must be compiled into OTP. A listening SCTP socket must be opened via \u003ccode\u003egen_sctp\u003c/code\u003e with the default \u003ccode\u003einet\u003c/code\u003e backend and must be reachable from the attacker\u0027s network. Windows builds are unaffected as SCTP is not supported on Windows.\u003c/p\u003e"
            },
            {
              "base64": false,
              "type": "text/markdown",
              "value": "SCTP support must be compiled into OTP. A listening SCTP socket must be opened via `gen_sctp` with the default `inet` backend and must be reachable from the attacker\u0027s network. Windows builds are unaffected as SCTP is not supported on Windows."
            }
          ],
          "value": "SCTP support must be compiled into OTP. A listening SCTP socket must be opened via gen_sctp with the default inet backend and must be reachable from the attacker\u0027s network. Windows builds are unaffected as SCTP is not supported on Windows."
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "27.3.4.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "28.5.0.2",
                  "versionStartIncluding": "28.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "29.0.2",
                  "versionStartIncluding": "29.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "AND"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Zhang Delong"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Raimo Niskanen"
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      ],
      "datePublic": "2026-06-10T14:35:38.000Z",
      "descriptions": [
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              "value": "\u003cp\u003eStack-based Buffer Overflow vulnerability in Erlang OTP \u003ccode\u003eerts\u003c/code\u003e (\u003ccode\u003einet_drv\u003c/code\u003e) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\u003c/p\u003e\n\u003cp\u003eThe \u003ccode\u003esctp_parse_error_chunk\u003c/code\u003e function in \u003ccode\u003eerts/emulator/drivers/common/inet_drv.c\u003c/code\u003e parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated \u003ccode\u003eErlDrvTermData spec[]\u003c/code\u003e array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\u003c/p\u003e\n\u003cp\u003eA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\u003c/p\u003e\n\u003cp\u003eThis issue affects OTP from OTP\u0026nbsp;17.0 before OTP\u0026nbsp;27.3.4.13, OTP\u0026nbsp;28.5.0.2, and OTP\u0026nbsp;29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP\u0026nbsp;17.0, corresponding to erts before 6.0, is affected is unknown.\u003c/p\u003e"
            },
            {
              "base64": false,
              "type": "text/markdown",
              "value": "Stack-based Buffer Overflow vulnerability in Erlang OTP `erts` (`inet_drv`) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\n\nThe `sctp_parse_error_chunk` function in `erts/emulator/drivers/common/inet_drv.c` parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated `ErlDrvTermData spec[]` array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\n\nA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\n\nThis issue affects OTP from OTP\u00a017.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP\u00a017.0, corresponding to erts before 6.0, is affected is unknown."
            }
          ],
          "value": "Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\n\nThe sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\n\nA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\n\nThis issue affects OTP from OTP\u00a017.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP\u00a017.0, corresponding to erts before 6.0, is affected is unknown."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-100",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-100 Overflow Buffers"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121 Stack-based Buffer Overflow",
              "lang": "en",
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          ]
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      "providerMetadata": {
        "dateUpdated": "2026-09-24T20:41:04.351Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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        {
          "tags": [
            "vendor-advisory",
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          "url": "https://github.com/erlang/otp/security/advisories/GHSA-6f4f-chj5-5g97"
        },
        {
          "name": "EEF CNA record for CVE-2026-49759",
          "tags": [
            "related"
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          "url": "https://cna.erlef.org/cves/CVE-2026-49759.html"
        },
        {
          "name": "OSV record EEF-CVE-2026-49759",
          "tags": [
            "related"
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          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-49759"
        },
        {
          "name": "Erlang/OTP version ordering",
          "tags": [
            "x_version-scheme"
          ],
          "url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
        },
        {
          "name": "Fix commit 3983d49 in erlang/otp",
          "tags": [
            "patch"
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      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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    "datePublished": "2026-06-10T14:35:38.838Z",
    "dateReserved": "2026-06-01T13:45:22.449Z",
    "dateUpdated": "2026-09-24T20:41:04.351Z",
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

USN-8901-1 (UBUNTU-CVE-2025-4748)

Vulnerability from osv_ubuntu – Published: 2026-10-08 12:01 – Updated: 2026-10-08 12:01 – Source website

Summary

erlang vulnerabilities

Details

Wander Nauta discovered that Erlang incorrectly handled absolute paths when extracting zip archives. An attacker could possibly use this issue to write arbitrary files outside of the intended directory. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2025-4748)

It was discovered that the Erlang SFTP server did not properly limit the size of packets. A remote attacker could possibly use this issue to cause Erlang to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. (CVE-2025-26618)

It was discovered that the Erlang SSH server did not properly limit the length of algorithm names in key exchange messages. A remote attacker could possibly use this issue to cause Erlang to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. (CVE-2025-30211)

It was discovered that the Erlang TFTP server incorrectly handled certain file paths. A remote attacker could possibly use this issue to access files outside of the intended directory. (CVE-2026-21620)

It was discovered that the Erlang SFTP server incorrectly validated paths against the configured root directory. An authenticated user could possibly use this issue to access files outside of the root directory. (CVE-2026-23942)

It was discovered that the Erlang SSH server enabled zlib compression by default and did not limit the size of decompressed data. A remote attacker could possibly use this issue to cause Erlang to use excessive resources, leading to a denial of service. (CVE-2026-23943)

It was discovered that the Erlang HTTP server incorrectly applied directory access controls to CGI scripts served via script aliases. A remote attacker could possibly use this issue to bypass authentication and access protected CGI scripts. (CVE-2026-28808)

It was discovered that the Erlang DNS resolver used predictable transaction IDs and did not randomize source ports. A remote attacker could possibly use this issue to perform DNS cache poisoning attacks. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-28810)

It was discovered that Erlang did not verify the signatures of designated OCSP responder certificates. A remote attacker could possibly use this issue to forge OCSP responses and bypass certificate revocation checks. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-32144)

It was discovered that the Erlang SFTP server incorrectly handled file attribute changes on open file handles. An authenticated user could possibly use this issue to modify the attributes of files outside of the root directory. (CVE-2026-32147)

It was discovered that Erlang incorrectly allowed non-CA certificates to act as intermediate certificate issuers. A remote attacker could possibly use this issue to forge certificate chains. (CVE-2026-42789)

It was discovered that Erlang incorrectly handled DNS name constraints during hostname verification. A remote attacker could possibly use this issue to bypass certificate validation. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-42790)

It was discovered that Erlang did not check the validity period of OCSP responder certificates. A remote attacker could possibly use this issue to forge OCSP responses using an expired responder certificate. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-42791)

It was discovered that Erlang incorrectly handled relative paths when extracting zip archives. An attacker could possibly use this issue to write arbitrary files outside of the intended directory. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-47078)

It was discovered that the Erlang SFTP server exposed absolute paths when reading symbolic links. An authenticated user could possibly use this issue to obtain sensitive information. (CVE-2026-48855)

It was discovered that the Erlang HTTP client forwarded authorization headers on cross-origin redirects. A malicious HTTP server could possibly use this issue to obtain sensitive information. (CVE-2026-48856)

It was discovered that the Erlang FTP client did not validate the IP address in passive mode responses. A malicious FTP server could possibly use this issue to perform server-side request forgery attacks. (CVE-2026-48858)

It was discovered that Erlang checked the local address instead of the peer address when enforcing the allowlist for distribution over TLS. A remote attacker could possibly use this issue to bypass access restrictions. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-48860)

It was discovered that Erlang incorrectly handled certain SCTP ERROR chunks, leading to a buffer overflow. A remote attacker could possibly use this issue to cause Erlang to crash, resulting in a denial of service. (CVE-2026-49759)

It was discovered that the Erlang erl_interface library incorrectly handled printing very large integers, leading to a buffer overflow. An attacker could possibly use this issue to cause Erlang to crash or execute arbitrary code. (CVE-2026-49760)

It was discovered that the Erlang SFTP server incorrectly handled certain path resolution requests. An authenticated user could possibly use this issue to determine the existence of files outside of the root directory. (CVE-2026-53422)

It was discovered that the Erlang SFTP server incorrectly handled extended channel data, leading to an infinite loop. An authenticated user could possibly use this issue to cause a denial of service. (CVE-2026-54886)

It was discovered that the Erlang DTLS server used a predictable cookie secret on startup. A remote attacker could possibly use this issue to bypass source address verification. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-54887)

It was discovered that Erlang TLS clients incorrectly accepted application data before the handshake was completed. A remote attacker could possibly use this issue to inject arbitrary data into TLS connections. (CVE-2026-54891)

It was discovered that the Erlang DTLS server contained a race condition when handling rapid client reconnections. A remote attacker could possibly use this issue to cause Erlang to crash, resulting in a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-55950)

It was discovered that Erlang did not properly validate TLS 1.3 pre-shared key extensions. A remote attacker could possibly use this issue to cause Erlang to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-55952)

It was discovered that the Erlang ASN.1 decoder incorrectly handled certain object identifiers. A remote attacker could possibly use this issue to cause Erlang to use excessive resources, leading to a denial of service. (CVE-2026-65634)

It was discovered that the Erlang SSH server did not properly limit the number of open channels. An authenticated user could possibly use this issue to cause Erlang to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-68956)

It was discovered that the Erlang HTTP server incorrectly shared users and groups between directories when using dets or mnesia authentication backends. A remote attacker could possibly use this issue to bypass authentication and access protected directories. (CVE-2026-74994)

It was discovered that Erlang TLS clients incorrectly accepted unsolicited TLS 1.3 pre-shared keys from servers. A remote attacker could possibly use this issue to impersonate servers. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-89422)

References

URL

Type

	https://ubuntu.com/security/notices/USN-8901-1	ADVISORY
	https://ubuntu.com/security/CVE-2025-4748	REPORT
	https://ubuntu.com/security/CVE-2025-26618	REPORT
	https://ubuntu.com/security/CVE-2025-30211	REPORT
	https://ubuntu.com/security/CVE-2026-21620	REPORT
	https://ubuntu.com/security/CVE-2026-23942	REPORT
	https://ubuntu.com/security/CVE-2026-23943	REPORT
	https://ubuntu.com/security/CVE-2026-28808	REPORT
	https://ubuntu.com/security/CVE-2026-28810	REPORT
	https://ubuntu.com/security/CVE-2026-32144	REPORT
	https://ubuntu.com/security/CVE-2026-32147	REPORT
	https://ubuntu.com/security/CVE-2026-42789	REPORT
	https://ubuntu.com/security/CVE-2026-42790	REPORT
	https://ubuntu.com/security/CVE-2026-42791	REPORT
	https://ubuntu.com/security/CVE-2026-47078	REPORT
	https://ubuntu.com/security/CVE-2026-48855	REPORT
	https://ubuntu.com/security/CVE-2026-48856	REPORT
	https://ubuntu.com/security/CVE-2026-48858	REPORT
	https://ubuntu.com/security/CVE-2026-48860	REPORT
	https://ubuntu.com/security/CVE-2026-49759	REPORT
	https://ubuntu.com/security/CVE-2026-49760	REPORT
	https://ubuntu.com/security/CVE-2026-53422	REPORT
	https://ubuntu.com/security/CVE-2026-54886	REPORT
	https://ubuntu.com/security/CVE-2026-54887	REPORT
	https://ubuntu.com/security/CVE-2026-54891	REPORT
	https://ubuntu.com/security/CVE-2026-55950	REPORT
	https://ubuntu.com/security/CVE-2026-55952	REPORT
	https://ubuntu.com/security/CVE-2026-65634	REPORT
	https://ubuntu.com/security/CVE-2026-68956	REPORT
	https://ubuntu.com/security/CVE-2026-74994	REPORT
	https://ubuntu.com/security/CVE-2026-89422	REPORT

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{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-26618",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-30211",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-21620",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-23942",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-23943",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-28808",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-32147",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-42789",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-48855",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-48856",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-48858",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-49759",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-49760",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53422",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-54886",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-54891",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-65634",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-74994",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "erlang",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-appmon",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-asn1",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-base",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-base-hipe",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-common-test",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-corba",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-crypto",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-debugger",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-dialyzer",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-diameter",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-edoc",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-eldap",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-erl-docgen",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-et",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-eunit",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-examples",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-gs",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-ic",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-ic-java",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-inets",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-jinterface",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-manpages",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-megaco",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-mnesia",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-mode",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-nox",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-observer",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-odbc",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-os-mon",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-parsetools",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-percept",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-pman",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-public-key",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-reltool",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-runtime-tools",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-snmp",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-src",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-ssh",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-ssl",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-syntax-tools",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-test-server",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-toolbar",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-tools",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-tv",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-typer",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-webtool",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-x11",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          },
          {
            "binary_name": "erlang-xmerl",
            "binary_version": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "erlang",
        "purl": "pkg:deb/ubuntu/erlang@1:16.b.3-dfsg-1ubuntu2.2+esm3?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:16.b.3-dfsg-1ubuntu2.2+esm3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:16.b.1-dfsg-4ubuntu1",
        "1:16.b.2-dfsg-1ubuntu1",
        "1:16.b.2-dfsg-2ubuntu1",
        "1:16.b.3-dfsg-1ubuntu1",
        "1:16.b.3-dfsg-1ubuntu2",
        "1:16.b.3-dfsg-1ubuntu2.1",
        "1:16.b.3-dfsg-1ubuntu2.2",
        "1:16.b.3-dfsg-1ubuntu2.2+esm1",
        "1:16.b.3-dfsg-1ubuntu2.2+esm2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-4748",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-26618",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-30211",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-21620",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-23942",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-23943",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-28808",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-32147",
              "severity": [
                {
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            "binary_name": "erlang-edoc",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-eldap",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-et",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-eunit",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-examples",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-ftp",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-inets",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-jinterface",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-megaco",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-mnesia",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-mode",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-nox",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-observer",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-odbc",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-os-mon",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-parsetools",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-public-key",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-reltool",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-runtime-tools",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-snmp",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-src",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-ssh",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-ssl",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-syntax-tools",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-tftp",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-tools",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-wx",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-x11",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          },
          {
            "binary_name": "erlang-xmerl",
            "binary_version": "1:27.3.4.6+dfsg-1ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "erlang",
        "purl": "pkg:deb/ubuntu/erlang@1:27.3.4.6+dfsg-1ubuntu0.2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:27.3.4.6+dfsg-1ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:27.3.4.1+dfsg-1build1",
        "1:27.3.4.3+dfsg-1",
        "1:27.3.4.4+dfsg-1",
        "1:27.3.4.6+dfsg-1",
        "1:27.3.4.6+dfsg-1ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Wander Nauta discovered that Erlang incorrectly handled absolute paths when\nextracting zip archives. An attacker could possibly use this issue to write\narbitrary files outside of the intended directory. This issue only affected\nUbuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2025-4748)\n\nIt was discovered that the Erlang SFTP server did not properly limit the\nsize of packets. A remote attacker could possibly use this issue to cause\nErlang to use excessive resources, leading to a denial of service. This\nissue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and\nUbuntu 18.04 LTS. (CVE-2025-26618)\n\nIt was discovered that the Erlang SSH server did not properly limit the\nlength of algorithm names in key exchange messages. A remote attacker could\npossibly use this issue to cause Erlang to use excessive resources, leading\nto a denial of service. This issue only affected Ubuntu 14.04 LTS,\nUbuntu 16.04 LTS, and Ubuntu 18.04 LTS. (CVE-2025-30211)\n\nIt was discovered that the Erlang TFTP server incorrectly handled certain\nfile paths. A remote attacker could possibly use this issue to access files\noutside of the intended directory. (CVE-2026-21620)\n\nIt was discovered that the Erlang SFTP server incorrectly validated paths\nagainst the configured root directory. An authenticated user could possibly\nuse this issue to access files outside of the root directory.\n(CVE-2026-23942)\n\nIt was discovered that the Erlang SSH server enabled zlib compression by\ndefault and did not limit the size of decompressed data. A remote attacker\ncould possibly use this issue to cause Erlang to use excessive resources,\nleading to a denial of service. (CVE-2026-23943)\n\nIt was discovered that the Erlang HTTP server incorrectly applied directory\naccess controls to CGI scripts served via script aliases. A remote attacker\ncould possibly use this issue to bypass authentication and access protected\nCGI scripts. (CVE-2026-28808)\n\nIt was discovered that the Erlang DNS resolver used predictable transaction\nIDs and did not randomize source ports. A remote attacker could possibly\nuse this issue to perform DNS cache poisoning attacks. This issue only\naffected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.\n(CVE-2026-28810)\n\nIt was discovered that Erlang did not verify the signatures of designated\nOCSP responder certificates. A remote attacker could possibly use this\nissue to forge OCSP responses and bypass certificate revocation checks.\nThis issue only affected Ubuntu 26.04 LTS. (CVE-2026-32144)\n\nIt was discovered that the Erlang SFTP server incorrectly handled file\nattribute changes on open file handles. An authenticated user could\npossibly use this issue to modify the attributes of files outside of the\nroot directory. (CVE-2026-32147)\n\nIt was discovered that Erlang incorrectly allowed non-CA certificates to\nact as intermediate certificate issuers. A remote attacker could possibly\nuse this issue to forge certificate chains. (CVE-2026-42789)\n\nIt was discovered that Erlang incorrectly handled DNS name constraints\nduring hostname verification. A remote attacker could possibly use this\nissue to bypass certificate validation. This issue only affected\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and\nUbuntu 26.04 LTS. (CVE-2026-42790)\n\nIt was discovered that Erlang did not check the validity period of OCSP\nresponder certificates. A remote attacker could possibly use this issue to\nforge OCSP responses using an expired responder certificate. This issue\nonly affected Ubuntu 26.04 LTS. (CVE-2026-42791)\n\nIt was discovered that Erlang incorrectly handled relative paths when\nextracting zip archives. An attacker could possibly use this issue to write\narbitrary files outside of the intended directory. This issue only affected\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and\nUbuntu 26.04 LTS. (CVE-2026-47078)\n\nIt was discovered that the Erlang SFTP server exposed absolute paths when\nreading symbolic links. An authenticated user could possibly use this issue\nto obtain sensitive information. (CVE-2026-48855)\n\nIt was discovered that the Erlang HTTP client forwarded authorization\nheaders on cross-origin redirects. A malicious HTTP server could possibly\nuse this issue to obtain sensitive information. (CVE-2026-48856)\n\nIt was discovered that the Erlang FTP client did not validate the IP\naddress in passive mode responses. A malicious FTP server could possibly\nuse this issue to perform server-side request forgery attacks.\n(CVE-2026-48858)\n\nIt was discovered that Erlang checked the local address instead of the peer\naddress when enforcing the allowlist for distribution over TLS. A remote\nattacker could possibly use this issue to bypass access restrictions. This\nissue only affected Ubuntu 26.04 LTS. (CVE-2026-48860)\n\nIt was discovered that Erlang incorrectly handled certain SCTP ERROR\nchunks, leading to a buffer overflow. A remote attacker could possibly use\nthis issue to cause Erlang to crash, resulting in a denial of service.\n(CVE-2026-49759)\n\nIt was discovered that the Erlang erl_interface library incorrectly handled\nprinting very large integers, leading to a buffer overflow. An attacker\ncould possibly use this issue to cause Erlang to crash or execute arbitrary\ncode. (CVE-2026-49760)\n\nIt was discovered that the Erlang SFTP server incorrectly handled certain\npath resolution requests. An authenticated user could possibly use this\nissue to determine the existence of files outside of the root directory.\n(CVE-2026-53422)\n\nIt was discovered that the Erlang SFTP server incorrectly handled extended\nchannel data, leading to an infinite loop. An authenticated user could\npossibly use this issue to cause a denial of service. (CVE-2026-54886)\n\nIt was discovered that the Erlang DTLS server used a predictable cookie\nsecret on startup. A remote attacker could possibly use this issue to\nbypass source address verification. This issue only affected\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and\nUbuntu 26.04 LTS. (CVE-2026-54887)\n\nIt was discovered that Erlang TLS clients incorrectly accepted application\ndata before the handshake was completed. A remote attacker could possibly\nuse this issue to inject arbitrary data into TLS connections.\n(CVE-2026-54891)\n\nIt was discovered that the Erlang DTLS server contained a race condition\nwhen handling rapid client reconnections. A remote attacker could possibly\nuse this issue to cause Erlang to crash, resulting in a denial of service.\nThis issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS.\n(CVE-2026-55950)\n\nIt was discovered that Erlang did not properly validate TLS 1.3 pre-shared\nkey extensions. A remote attacker could possibly use this issue to cause\nErlang to crash, resulting in a denial of service. This issue only affected\nUbuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.\n(CVE-2026-55952)\n\nIt was discovered that the Erlang ASN.1 decoder incorrectly handled certain\nobject identifiers. A remote attacker could possibly use this issue to\ncause Erlang to use excessive resources, leading to a denial of service.\n(CVE-2026-65634)\n\nIt was discovered that the Erlang SSH server did not properly limit the\nnumber of open channels. An authenticated user could possibly use this\nissue to cause Erlang to use excessive resources, leading to a denial of\nservice. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS,\nUbuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.\n(CVE-2026-68956)\n\nIt was discovered that the Erlang HTTP server incorrectly shared users and\ngroups between directories when using dets or mnesia authentication\nbackends. A remote attacker could possibly use this issue to bypass\nauthentication and access protected directories. (CVE-2026-74994)\n\nIt was discovered that Erlang TLS clients incorrectly accepted unsolicited\nTLS 1.3 pre-shared keys from servers. A remote attacker could possibly use\nthis issue to impersonate servers. This issue only affected\nUbuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.\n(CVE-2026-89422)",
  "id": "USN-8901-1",
  "modified": "2026-10-08T12:01:56Z",
  "published": "2026-10-08T12:01:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8901-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-4748"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-26618"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-30211"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-21620"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-23942"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-23943"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-28808"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-28810"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-32144"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-32147"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-42789"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-42790"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-42791"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-47078"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-48855"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-48856"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-48858"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-48860"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-49759"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-49760"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-53422"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-54886"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-54887"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-54891"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-55950"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-55952"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-65634"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-68956"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-74994"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-89422"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "erlang vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2025-4748",
    "UBUNTU-CVE-2025-26618",
    "UBUNTU-CVE-2025-30211",
    "UBUNTU-CVE-2026-21620",
    "UBUNTU-CVE-2026-23942",
    "UBUNTU-CVE-2026-23943",
    "UBUNTU-CVE-2026-28808",
    "UBUNTU-CVE-2026-28810",
    "UBUNTU-CVE-2026-32144",
    "UBUNTU-CVE-2026-32147",
    "UBUNTU-CVE-2026-42789",
    "UBUNTU-CVE-2026-42790",
    "UBUNTU-CVE-2026-42791",
    "UBUNTU-CVE-2026-47078",
    "UBUNTU-CVE-2026-48855",
    "UBUNTU-CVE-2026-48856",
    "UBUNTU-CVE-2026-48858",
    "UBUNTU-CVE-2026-48860",
    "UBUNTU-CVE-2026-49759",
    "UBUNTU-CVE-2026-49760",
    "UBUNTU-CVE-2026-53422",
    "UBUNTU-CVE-2026-54886",
    "UBUNTU-CVE-2026-54887",
    "UBUNTU-CVE-2026-54891",
    "UBUNTU-CVE-2026-55950",
    "UBUNTU-CVE-2026-55952",
    "UBUNTU-CVE-2026-65634",
    "UBUNTU-CVE-2026-68956",
    "UBUNTU-CVE-2026-74994",
    "UBUNTU-CVE-2026-89422"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

UBUNTU-CVE-2026-49759 (CVE-2026-49759)

CVE-2026-49759 (GCVE-0-2026-49759)

USN-8901-1 (UBUNTU-CVE-2025-4748)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour