Is CVE-2026-5435 actively exploited?

No active exploitation of CVE-2026-5435 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-5435 be exploited remotely?

Yes. CVE-2026-5435 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-5435?

CVE-2026-5435 has a CVSS score of 7.3 (HIGH).

HOME VULNERABILITIESCVE-2026-5435

HIGH

CVE-2026-5435

CWE-787Published: April 28, 2026· Updated: Apr 28, 2026

7.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.9th

Official 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.

NVD Source

Technical Analysis

CVE-2026-5435 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.