CVE-2025-14831
Deferred Deferred - Pending Action

Denial of Service in GnuTLS via Malicious Certificate Parsing

Publication date: 2026-02-09

Last updated on: 2026-06-30

Assigner: Red Hat, Inc.

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).

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Meta Information

Published
2026-02-09
Last Modified
2026-06-30
Generated
2026-07-06
AI Q&A
2026-02-09
EPSS Evaluated
2026-07-05
NVD
CVE-2025-14831
EUVD
EUVD-2025-207365

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
gnutls gnutls *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-407 An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.

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Executive Summary

This vulnerability is a flaw in GnuTLS that allows an attacker to cause a denial of service (DoS) by making the system consume excessive CPU and memory resources.

The attack is carried out by using specially crafted malicious certificates that contain a large number of name constraints and subject alternative names (SANs).

Impact Analysis

This vulnerability can impact you by causing a denial of service condition on systems using GnuTLS.

Specifically, the system may experience excessive CPU and memory consumption, which can degrade performance or cause the system to become unresponsive.

Compliance Impact

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