Vulnerability-Lookup

brew-glibc-cve-2026-5435

Vulnerability from osv_homebrew

Published

2026-08-05 16:54

Modified

2026-08-05 16:54

Summary

Details

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "patch",
        "patches": [
          {
            "apply": [
              "patches/any/CVE-2024-2961.patch",
              "patches/any/CVE-2024-33599.patch",
              "patches/any/CVE-2024-33600_1.patch",
              "patches/any/CVE-2024-33600_2.patch",
              "patches/any/CVE-2024-33601_33602.patch",
              "patches/any/CVE-2025-0395.patch",
              "patches/any/CVE-2025-5702.patch",
              "patches/any/CVE-2025-8058.patch",
              "patches/CVE-2025-15281.patch",
              "patches/CVE-2026-0861.patch",
              "patches/CVE-2026-0915.patch",
              "patches/CVE-2026-4046.patch",
              "patches/CVE-2026-5450.patch",
              "patches/CVE-2026-5928.patch",
              "patches/CVE-2026-6238-pre1.patch",
              "patches/CVE-2026-6238-pre2.patch",
              "patches/CVE-2026-6238-pre3.patch",
              "patches/CVE-2026-6238-pre4.patch",
              "patches/CVE-2026-5435.patch",
              "patches/CVE-2026-6238-1.patch",
              "patches/CVE-2026-6238-2.patch",
              "patches/CVE-2026-443x.patch"
            ],
            "type": "backport",
            "url": "https://archive.ubuntu.com/ubuntu/pool/main/g/glibc/glibc_2.39-0ubuntu8.8.debian.tar.xz"
          }
        ]
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "glibc",
        "purl": "pkg:brew/glibc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.39_1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "source": "generated"
  },
  "id": "BREW-glibc-CVE-2026-5435",
  "modified": "2026-08-05T16:54:10Z",
  "published": "2026-08-05T16:54:10Z",
  "schema_version": "1.7.3",
  "upstream": [
    "CVE-2026-5435"
  ]
}

CVE-2026-5435 (GCVE-0-2026-5435)

Vulnerability from cvelistv5 – Published: 2026-04-28 11:58 – Updated: 2026-07-14 12:45

Title

Potential buffer overflow in ns_sprintrrf TSIG handling path

Summary

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.

Severity

7.3 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-28 15:15 UTC

CWE

CWE-787 - Out-of-bounds write

Assigner

glibc redhat root

References

3 references

URL	Tags
https://sourceware.org/bugzilla/show_bug.cgi?id=34033	issue-tracking
https://inbox.sourceware.org/libc-announce/7a655d…	mailing-list
https://cert-portal.siemens.com/productcert/html/…

Impacted products

4 products

Vendor	Product	Version
The GNU C Library	glibc	Affected: 2.2 , ≤ * (custom)
Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.5 , < V3.1.6 (custom)
Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	Affected: V3.1.5 , < V3.1.6 (custom)
Siemens	SIPLUS S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.5 , < V3.1.6 (custom)

Date Public

2026-04-02 02:11

Credits

shinobu

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 7.3,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
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            }
          },
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                "id": "CVE-2026-5435",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-28T15:15:07.411547Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-28T15:21:13.800Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.1.6",
                "status": "affected",
                "version": "V3.1.5",
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          },
          {
            "defaultStatus": "unknown",
            "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.1.6",
                "status": "affected",
                "version": "V3.1.5",
                "versionType": "custom"
              }
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-14T12:45:29.470Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
          }
        ],
        "x_adpType": "supplier"
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    ],
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          "vendor": "The GNU C Library",
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              "status": "affected",
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            }
          ],
          "value": "The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records."
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      "impacts": [
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      "problemTypes": [
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          "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=34033"
        },
        {
          "tags": [
            "mailing-list"
          ],
          "url": "https://inbox.sourceware.org/libc-announce/7a655d55-276f-41fe-b550-feb3ebb2ce91@redhat.com/T/#u"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
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      "title": "Potential buffer overflow in ns_sprintrrf TSIG handling path",
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    "assignerShortName": "glibc",
    "cveId": "CVE-2026-5435",
    "datePublished": "2026-04-28T11:58:54.962Z",
    "dateReserved": "2026-04-02T17:18:02.654Z",
    "dateUpdated": "2026-07-14T12:45:29.470Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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.

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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.