---
id: CVE-2025-14831
title: A flaw was found in GnuTLS
summary: >-
  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 …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-407
published: '2026-02-09'
updated: '2026-06-29'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-14831'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:13812'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:16008'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:16009'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:16174'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:25096'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:30849'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:30850'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:3477'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:4188'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:4655'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:4943'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:5585'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:5606'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:6618'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:6630'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:6737'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:6738'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:7329'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:7335'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:7477'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:8746'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:8747'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:8748'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2025-14831'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2423177'
    label: secalert@redhat.com
  - url: 'https://gitlab.com/gnutls/gnutls/-/issues/1773'
    label: secalert@redhat.com
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-032379.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
epss: 0.00634
epssPercentile: 0.48196
ingestedAt: '2026-06-29T13:24:34.640Z'
---

## Overview

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).

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.