Vulnerability record · CVE-2026-5435 · published 28 April 2026

CVE-2026-5435: Gnu glibc out-of-bounds write vulnerability

Gnu · Glibc

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.

7.3 CVSS 3.1 High EPSS 0.39% · top 69.0% CWE-787 · Out-of-bounds write

7.3CVSS 3.1 base score

0.39%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References

14 Jul 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Glibc Gnu

References

Link	Tags
https://inbox.sourceware.org/libc-announce/[email protected]/T/#u	Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=34033	Issue Tracking
https://cert-portal.siemens.com/productcert/html/ssa-082556.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-5435), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.