CVE-2026-5435
Analyzed Analyzed - Analysis Complete
Out-of-Bounds Write in GNU C Library TSIG Print Functions

Publication date: 2026-04-28

Last updated on: 2026-05-05

Assigner: GNU C Library

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.
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Meta Information
Published
2026-04-28
Last Modified
2026-05-05
Generated
2026-06-16
AI Q&A
2026-04-28
EPSS Evaluated
2026-06-15
NVD
CVE-2026-5435
EUVD
EUVD-2026-26036
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
gnu glibc From 2.2 (inc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
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Executive Summary

This vulnerability involves deprecated functions in the GNU C Library (version 2.2 and newer) named ns_printrrf, ns_printrr, and fp_nquery. These functions fail to enforce the length of the buffer provided by the caller, which can lead to an out-of-bounds write when printing TSIG records.

Impact Analysis

The vulnerability can cause an out-of-bounds write, which may lead to memory corruption. This can potentially be exploited to cause application crashes, data corruption, or even arbitrary code execution depending on the context in which these functions are used.

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