Vulnerability-Lookup

CVE-2026-5358 (GCVE-0-2026-5358)

Vulnerability from cvelistv5 – Published: 2026-04-20 20:37 – Updated: 2026-04-22 13:04

REJECTED: CVE-2026-5358 is rejected for two reasons. Firstly it has been discovered that no NIS+ client or server was ever released for any Linux-based OS distributions and as such this makes the API provisional and unused. Secondly it has been discovered that the NIS+ cold start cache (/var/nis/NIS_COLD_START) cannot be bypassed and as such the API can only be called with a trusted server from the pre-populated cache. The use of a trusted server means no trust boundary is crossed and this is therefore considered a normal bug.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "providerMetadata": {
        "dateUpdated": "2026-04-22T13:04:20.656Z",
        "orgId": "3ff69d7a-14f2-4f67-a097-88dee7810d18",
        "shortName": "glibc"
      },
      "rejectedReasons": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cdiv\u003e\u003cspan\u003eREJECTED: CVE-2026-5358 is rejected for two reasons. Firstly it has been\u0026nbsp;\u003c/span\u003e\u003cspan\u003ediscovered that no NIS+ client or server was ever released for any\u0026nbsp;\u003c/span\u003e\u003cspan\u003eLinux-based OS distributions and as such this makes the API provisional\u0026nbsp;\u003c/span\u003e\u003cspan\u003eand unused.  Secondly it has been discovered that the NIS+ cold start\u0026nbsp;\u003c/span\u003e\u003cspan\u003ecache (/var/nis/NIS_COLD_START) cannot be bypassed and as such the API\u0026nbsp;\u003c/span\u003e\u003cspan\u003ecan only be called with a trusted server from the pre-populated cache.\u0026nbsp;\u003c/span\u003e\u003cspan\u003eThe use of a trusted server means no trust boundary is crossed and this\u0026nbsp;\u003c/span\u003e\u003cspan\u003eis therefore considered a normal bug.\u003c/span\u003e\u003c/div\u003e\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c/span\u003e\u003c/div\u003e"
            }
          ],
          "value": "REJECTED: CVE-2026-5358 is rejected for two reasons. Firstly it has been\u00a0discovered that no NIS+ client or server was ever released for any\u00a0Linux-based OS distributions and as such this makes the API provisional\u00a0and unused.  Secondly it has been discovered that the NIS+ cold start\u00a0cache (/var/nis/NIS_COLD_START) cannot be bypassed and as such the API\u00a0can only be called with a trusted server from the pre-populated cache.\u00a0The use of a trusted server means no trust boundary is crossed and this\u00a0is therefore considered a normal bug."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 1.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "3ff69d7a-14f2-4f67-a097-88dee7810d18",
    "assignerShortName": "glibc",
    "cveId": "CVE-2026-5358",
    "datePublished": "2026-04-20T20:37:23.178Z",
    "dateRejected": "2026-04-22T13:04:20.656Z",
    "dateReserved": "2026-04-01T17:07:51.437Z",
    "dateUpdated": "2026-04-22T13:04:20.656Z",
    "state": "REJECTED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-5358",
      "date": "2026-04-22",
      "epss": "0.0004",
      "percentile": "0.12183"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-5358\",\"sourceIdentifier\":\"3ff69d7a-14f2-4f67-a097-88dee7810d18\",\"published\":\"2026-04-20T21:16:36.713\",\"lastModified\":\"2026-04-22T14:17:05.687\",\"vulnStatus\":\"Rejected\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Rejected reason: REJECTED: CVE-2026-5358 is rejected for two reasons. Firstly it has been\u00a0discovered that no NIS+ client or server was ever released for any\u00a0Linux-based OS distributions and as such this makes the API provisional\u00a0and unused.  Secondly it has been discovered that the NIS+ cold start\u00a0cache (/var/nis/NIS_COLD_START) cannot be bypassed and as such the API\u00a0can only be called with a trusted server from the pre-populated cache.\u00a0The use of a trusted server means no trust boundary is crossed and this\u00a0is therefore considered a normal bug.\"}],\"metrics\":{},\"references\":[]}}",
    "vulnrichment": {
      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"3ff69d7a-14f2-4f67-a097-88dee7810d18\", \"shortName\": \"glibc\", \"dateUpdated\": \"2026-04-22T13:04:20.656Z\"}, \"rejectedReasons\": [{\"lang\": \"en\", \"value\": \"REJECTED: CVE-2026-5358 is rejected for two reasons. Firstly it has been\\u00a0discovered that no NIS+ client or server was ever released for any\\u00a0Linux-based OS distributions and as such this makes the API provisional\\u00a0and unused.  Secondly it has been discovered that the NIS+ cold start\\u00a0cache (/var/nis/NIS_COLD_START) cannot be bypassed and as such the API\\u00a0can only be called with a trusted server from the pre-populated cache.\\u00a0The use of a trusted server means no trust boundary is crossed and this\\u00a0is therefore considered a normal bug.\", \"supportingMedia\": [{\"type\": \"text/html\", \"base64\": false, \"value\": \"\u003cdiv\u003e\u003cspan\u003eREJECTED: CVE-2026-5358 is rejected for two reasons. Firstly it has been\u0026nbsp;\u003c/span\u003e\u003cspan\u003ediscovered that no NIS+ client or server was ever released for any\u0026nbsp;\u003c/span\u003e\u003cspan\u003eLinux-based OS distributions and as such this makes the API provisional\u0026nbsp;\u003c/span\u003e\u003cspan\u003eand unused.  Secondly it has been discovered that the NIS+ cold start\u0026nbsp;\u003c/span\u003e\u003cspan\u003ecache (/var/nis/NIS_COLD_START) cannot be bypassed and as such the API\u0026nbsp;\u003c/span\u003e\u003cspan\u003ecan only be called with a trusted server from the pre-populated cache.\u0026nbsp;\u003c/span\u003e\u003cspan\u003eThe use of a trusted server means no trust boundary is crossed and this\u0026nbsp;\u003c/span\u003e\u003cspan\u003eis therefore considered a normal bug.\u003c/span\u003e\u003c/div\u003e\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c/span\u003e\u003c/div\u003e\"}]}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.1\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-5358\", \"assignerOrgId\": \"3ff69d7a-14f2-4f67-a097-88dee7810d18\", \"state\": \"REJECTED\", \"assignerShortName\": \"glibc\", \"dateReserved\": \"2026-04-01T17:07:51.437Z\", \"datePublished\": \"2026-04-20T20:37:23.178Z\", \"dateUpdated\": \"2026-04-22T13:04:20.656Z\", \"dateRejected\": \"2026-04-22T13:04:20.656Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

GHSA-JJ2G-XQ7W-GF88

Vulnerability from github – Published: 2026-04-20 21:31 – Updated: 2026-04-21 21:31

Details

The obsolete nis_local_principal function in the GNU C Library version 2.43 and older may overflow a buffer in the data section, which could allow an attacker to spoof a crafted response to a UDP request generated by this function and overwrite neighboring static data in the requesting application.

NIS support is obsolete and has been deprecated in the GNU C Library since version 2.26 and is only maintained for legacy usage. Applications should port away from NIS to more modern identity and access management services.

Severity ?

9.1 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-5358"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-20T21:16:36Z",
    "severity": "CRITICAL"
  },
  "details": "The obsolete nis_local_principal function in the GNU C Library version 2.43 and older may overflow a buffer in the data section, which could allow an attacker to spoof a crafted response to a UDP request generated by this function and overwrite neighboring static data in the requesting application.\n\nNIS support is obsolete and has been deprecated in the GNU C Library since version 2.26 and is only maintained for legacy usage. Applications should port away from NIS to more modern identity and access management services.",
  "id": "GHSA-jj2g-xq7w-gf88",
  "modified": "2026-04-21T21:31:21Z",
  "published": "2026-04-20T21:31:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5358"
    },
    {
      "type": "WEB",
      "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=34067"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

MSRC_CVE-2026-5358

Vulnerability from csaf_microsoft - Published: 2026-04-02 00:00 - Updated: 2026-04-23 01:01

Summary

Static buffer overflow in deprecated nis_local_principal

Notes

Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

CVE-2026-5358

9.1 (Critical)


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

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

None Available There is no fix available for this vulnerability as of now

References

URL

Category

	https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self
	https://support.microsoft.com/lifecycle	external
	https://www.first.org/cvss	external
	https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self

JSON

To clipboard

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-5358 Static buffer overflow in deprecated nis_local_principal - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-5358.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Static buffer overflow in deprecated nis_local_principal",
    "tracking": {
      "current_release_date": "2026-04-23T01:01:23.000Z",
      "generator": {
        "date": "2026-04-23T07:22:58.457Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-5358",
      "initial_release_date": "2026-04-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-04-22T01:01:24.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2026-04-23T01:01:23.000Z",
          "legacy_version": "2",
          "number": "2",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              },
              {
                "category": "product_version",
                "name": "2.0",
                "product": {
                  "name": "CBL Mariner 2.0",
                  "product_id": "17086"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "azl3 glibc 0:2.38-19.azl3",
                "product": {
                  "name": "azl3 glibc 0:2.38-19.azl3",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version_range",
                "name": "cbl2 glibc 0:2.35-10.cbl2",
                "product": {
                  "name": "cbl2 glibc 0:2.35-10.cbl2",
                  "product_id": "2"
                }
              }
            ],
            "category": "product_name",
            "name": "glibc"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 glibc 0:2.38-19.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cbl2 glibc 0:2.35-10.cbl2 as a component of CBL Mariner 2.0",
          "product_id": "17086-2"
        },
        "product_reference": "2",
        "relates_to_product_reference": "17086"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-5358",
      "cwe": {
        "id": "CWE-120",
        "name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
      },
      "notes": [
        {
          "category": "general",
          "text": "glibc",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "known_affected": [
          "17084-1",
          "17086-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-5358 Static buffer overflow in deprecated nis_local_principal - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-5358.json"
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-04-22T01:01:24.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-1"
          ]
        },
        {
          "category": "none_available",
          "date": "2026-04-22T01:01:24.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17086-2"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "NONE",
            "environmentalsScore": 0.0,
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 9.1,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "17084-1",
            "17086-2"
          ]
        }
      ],
      "title": "Static buffer overflow in deprecated nis_local_principal"
    }
  ]
}

FKIE_CVE-2026-5358

Vulnerability from fkie_nvd - Published: 2026-04-20 21:16 - Updated: 2026-04-22 14:17

Severity ?

Summary

Rejected reason: REJECTED: CVE-2026-5358 is rejected for two reasons. Firstly it has been discovered that no NIS+ client or server was ever released for any Linux-based OS distributions and as such this makes the API provisional and unused. Secondly it has been discovered that the NIS+ cold start cache (/var/nis/NIS_COLD_START) cannot be bypassed and as such the API can only be called with a trusted server from the pre-populated cache. The use of a trusted server means no trust boundary is crossed and this is therefore considered a normal bug.

References

	URL	Tags

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Rejected reason: REJECTED: CVE-2026-5358 is rejected for two reasons. Firstly it has been\u00a0discovered that no NIS+ client or server was ever released for any\u00a0Linux-based OS distributions and as such this makes the API provisional\u00a0and unused.  Secondly it has been discovered that the NIS+ cold start\u00a0cache (/var/nis/NIS_COLD_START) cannot be bypassed and as such the API\u00a0can only be called with a trusted server from the pre-populated cache.\u00a0The use of a trusted server means no trust boundary is crossed and this\u00a0is therefore considered a normal bug."
    }
  ],
  "id": "CVE-2026-5358",
  "lastModified": "2026-04-22T14:17:05.687",
  "metrics": {},
  "published": "2026-04-20T21:16:36.713",
  "references": [],
  "sourceIdentifier": "3ff69d7a-14f2-4f67-a097-88dee7810d18",
  "vulnStatus": "Rejected"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-5358 (GCVE-0-2026-5358)

GHSA-JJ2G-XQ7W-GF88

MSRC_CVE-2026-5358

FKIE_CVE-2026-5358

Tags

Sightings

Nomenclature