CVE-2025-14831

Gnutls: gnutls: denial of service via excessive resource consumption during certificate verification

State: Published
Severity: 5.3 Medium
Published: Feb 9, 2026
Updated: Oct 14, 2026
Reserved: Dec 17, 2025

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).

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	redhat

Weaknesses

CWE-407 Inefficient Algorithmic Complexity

Affected Products

Product	Versions
gnutls	0Affected
Red Hat Enterprise Linux 10Red Hat	0:3.8.10-3.el10_1 and laterNot affected
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat	0:3.8.9-9.el10_0.17 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:3.6.16-8.el8_10.5 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:3.6.16-8.el8_10.5 and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat	0:3.6.14-10.el8_4.1 and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat	0:4.13-3.el8_4.1 and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat	0:3.6.14-10.el8_4.1 and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat	0:4.13-3.el8_4.1 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat	0:3.6.16-5.el8_6.5 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat	0:4.13-3.el8_6.2 and laterNot affected
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat	0:3.6.16-5.el8_6.5 and laterNot affected
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat	0:4.13-3.el8_6.2 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat	0:3.6.16-7.el8_8.4 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat	0:4.13-4.el8_8.1 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	0:3.6.16-7.el8_8.4 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	0:4.13-4.el8_8.1 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:3.8.3-10.el9_7 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:3.8.3-10.el9_7 and laterNot affected
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat	0:3.7.6-21.el9_2.5 and laterNot affected
Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat	0:3.8.3-4.el9_4.5 and laterNot affected
Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat	0:3.8.3-6.el9_6.3 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat	7.13.5-4.1777325677 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat	7.13.5-4.1777325711 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat	7.13.5-4.1777325710 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat	7.13.5-3.1777325680 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat	7.13.5-4.1777325709 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat	7.13.5-4.1777325680 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat	7.13.5-4.1777325708 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat	1791459707 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat	1791459711 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat	1791459759 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat	1789029076 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat	1791966259 and laterNot affected
Red Hat AI Inference Server 3.2Red Hat	1780681984 and laterNot affected
Red Hat AI Inference Server 3.2Red Hat	1775740563 and laterNot affected
Red Hat AI Inference Server 3.3Red Hat	1778244559 and laterNot affected
Red Hat AI Inference Server 3.3Red Hat	1778244531 and laterNot affected
Red Hat AI Inference Server 3.3Red Hat	1778244546 and laterNot affected
Red Hat AI Inference Server 3.3Red Hat	1775680192 and laterNot affected
Red Hat AI Inference Server 3.3Red Hat	1775680262 and laterNot affected
Red Hat AI Inference Server 3.3Red Hat	1775749857 and laterNot affected
Red Hat Ceph Storage 8Red Hat	1774002867 and laterNot affected
Red Hat Discovery 2Red Hat	1775668717 and laterNot affected
Red Hat Discovery 2Red Hat	1775675922 and laterNot affected
Red Hat Hardened ImagesRed Hat	3.8.12-1.1.hum1 and laterNot affected
Red Hat Insights proxy 1.5Red Hat	1773685509 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1773670073 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1773672059 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1773668803 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1773670137 and laterNot affected
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 7Red Hat
Red Hat OpenShift Container Platform 4Red Hat
Red Hat OpenShift Container Platform 4Red Hat

References

RHSA-2026:13812vendor-advisory
RHSA-2026:16008vendor-advisory
RHSA-2026:16009vendor-advisory
RHSA-2026:16174vendor-advisory
RHSA-2026:25096vendor-advisory
RHSA-2026:30849vendor-advisory
RHSA-2026:30850vendor-advisory
RHSA-2026:33125vendor-advisory
RHSA-2026:3477vendor-advisory
RHSA-2026:4188vendor-advisory
RHSA-2026:4655vendor-advisory
RHSA-2026:4943vendor-advisory
RHSA-2026:5585vendor-advisory
RHSA-2026:5606vendor-advisory
RHSA-2026:6618vendor-advisory
RHSA-2026:6630vendor-advisory
RHSA-2026:6737vendor-advisory
RHSA-2026:6738vendor-advisory
RHSA-2026:7329vendor-advisory
RHSA-2026:7335vendor-advisory
RHSA-2026:7477vendor-advisory
RHSA-2026:82347vendor-advisory
RHSA-2026:82354vendor-advisory
RHSA-2026:82372vendor-advisory
RHSA-2026:82857vendor-advisory
RHSA-2026:8746vendor-advisory
RHSA-2026:8747vendor-advisory
RHSA-2026:8748vendor-advisory
https://access.redhat.com/security/cve/CVE-2025-14831vdb-entry
RHBZ#2423177issue-tracking
https://gitlab.com/gnutls/gnutls/-/issues/1773
https://cert-portal.siemens.com/productcert/html/ssa-032379.html

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