Is CVE-2026-42011 actively exploited?

No active exploitation of CVE-2026-42011 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42011 be exploited remotely?

Yes. CVE-2026-42011 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42011?

CVE-2026-42011 has a CVSS score of 7.4 (HIGH).

HOME VULNERABILITIESCVE-2026-42011

HIGH

CVE-2026-42011

CWE-295Published: May 7, 2026· Updated: May 7, 2026

7.4

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:6.0th

Official Description

A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.

NVD Source

Technical Analysis

CVE-2026-42011 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.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 7.4.