CVE-2026-5435

Name: CVE-2026-5435
Creator: NVD / NIST
Published: 2026-04-28T13:19:22.29+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.3/10EPSS 0.20%

Last modified Jun 17, 2026

CVE-2026-5435 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. 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.. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.3/10

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

EPSS Probability

0.20%

9.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Gnu	Glibc	>= 2.2

References

https://inbox.sourceware.org/libc-announce/7a655d55-276f-41fe-b550-feb3ebb2ce91@redhat.com/T/#uThird Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=34033Issue Tracking

Timeline

Published: Apr 28, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-5435?

How severe is CVE-2026-5435?

CVE-2026-5435 has a CVSS score of 7.3/10 (HIGH severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.

How do I fix CVE-2026-5435?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-5435?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST