CVE-2025-14831

gnutls: GnuTLS: Denial of Service via excessive resource consumption during certificate verification

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Severity

Moderate

Red Hat Product Security

5.3

CVSS 3.1

Review impact separately from score.

Published · February 9, 2026

Updated · October 15, 2026

Description

A flaw was found in GnuTLS. This vulnerability allows a denial of service (DoS) by excessive CPU (Central Processing Unit) and memory consumption via specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs).

Statement

This vulnerability is rated Moderate for Red Hat. GnuTLS is susceptible to a denial of service attack due to excessive CPU and memory consumption. This occurs when processing specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs) during certificate verification.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-407 · Inefficient Algorithmic Complexity