Vulnerability in Red Hat Enterprise Linux 10

CVE-2026-42012

A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate that contains Uniform Resource Identifier (URI) or Service (SRV) Subject Alternative Names (SANs). This could caus…

Vulnerability class: Improper Certificate Validation

EPSS: 0.000 (13.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-42012?
CVE-2026-42012 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Improper Certificate Validation. CVSS score: 7.1/10. Published 2026-05-26.
How severe is CVE-2026-42012?
High severity. CVSS v3 base score is 7.1 out of 10.