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CVE-2025-14831— Gnutls: gnutls: denial of service via excessive resource consumption during certificate verification

Quick assessment

Affected

CVE-2025-14831

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GnuTLS是GnuTLS开源的一款免费的用于实现SSL、TLS和DTLS协议的安全通信库。 GnuTLS存在安全漏洞，该漏洞源于处理特制恶意证书时消耗过多CPU和内存，可能导致拒绝服务。

CVSS 5.3 · Medium EPSS 0.67% · P52 Updated Oct 15, 2026

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 55

Vendor	Product	Version Range	Status
None	None		affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18	`1791459707< *`	unaffected
		`1791459711< *`	unaffected
		`1791459759< *`	unaffected
		`1789029076< *`	unaffected
		`1791966259< *`	unaffected
Red Hat	Red Hat AI Inference Server 3.2	`1780681984< *`	unaffected
		`1775740563< *`	unaffected
Red Hat	Red Hat AI Inference Server 3.3	`1778244559< *`	unaffected
		`1778244531< *`	unaffected
		`1778244546< *`	unaffected
		`1775680192< *`	unaffected
		`1775680262< *`	unaffected
		`1775749857< *`	unaffected
Red Hat	Red Hat Ceph Storage 8	`1774002867< *`	unaffected
Red Hat	Red Hat Discovery 2	`1775668717< *`	unaffected
		`1775675922< *`	unaffected
Red Hat	Red Hat Enterprise Linux 10	`0:3.8.10-3.el10_1< *`	unaffected
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	`0:3.8.9-9.el10_0.17< *`	unaffected
Red Hat	Red Hat Enterprise Linux 6	`any`	affected
Red Hat	Red Hat Enterprise Linux 7	`any`	affected
Red Hat	Red Hat Enterprise Linux 8	`0:3.6.16-8.el8_10.5< *`	unaffected
		`0:3.6.16-8.el8_10.5< *`	unaffected
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	`0:3.6.14-10.el8_4.1< *`	unaffected
		`0:4.13-3.el8_4.1< *`	unaffected
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	`0:3.6.14-10.el8_4.1< *`	unaffected
		`0:4.13-3.el8_4.1< *`	unaffected
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	`0:3.6.16-5.el8_6.5< *`	unaffected
		`0:4.13-3.el8_6.2< *`	unaffected
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	`0:3.6.16-5.el8_6.5< *`	unaffected
		`0:4.13-3.el8_6.2< *`	unaffected
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	`0:3.6.16-7.el8_8.4< *`	unaffected
		`0:4.13-4.el8_8.1< *`	unaffected
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	`0:3.6.16-7.el8_8.4< *`	unaffected
		`0:4.13-4.el8_8.1< *`	unaffected
Red Hat	Red Hat Enterprise Linux 9	`0:3.8.3-10.el9_7< *`	unaffected
		`0:3.8.3-10.el9_7< *`	unaffected
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	`0:3.7.6-21.el9_2.5< *`	unaffected
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	`0:3.8.3-4.el9_4.5< *`	unaffected
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	`0:3.8.3-6.el9_6.3< *`	unaffected
Red Hat	Red Hat Hardened Images	`3.8.12-1.1.hum1< *`	unaffected
Red Hat	Red Hat Insights proxy 1.5	`1773685509< *`	unaffected
Red Hat	Red Hat OpenShift Container Platform 4	`any`	affected
		`any`	affected
Red Hat	Red Hat Update Infrastructure 5	`1773670073< *`	unaffected
		`1773672059< *`	unaffected
		`1773668803< *`	unaffected
		`1773670137< *`	unaffected
Red Hat	RHEL-8 based Middleware Containers	`7.13.5-4.1777325677< *`	unaffected
		`7.13.5-4.1777325711< *`	unaffected
		`7.13.5-4.1777325710< *`	unaffected
		`7.13.5-3.1777325680< *`	unaffected
		`7.13.5-4.1777325709< *`	unaffected
		`7.13.5-4.1777325680< *`	unaffected
		`7.13.5-4.1777325708< *`	unaffected

I. Basic Information for CVE-2025-14831

Vulnerability Information

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Vulnerability Title

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

Source: CVE Program / CVE List V5

Vulnerability 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).

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

算法复杂性

Source: CVE Program / CVE List V5

Vulnerability Title

GnuTLS 安全漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE
-	-	0	-
Red Hat	Red Hat Enterprise Linux 10	0:3.8.10-3.el10_1 ~ *	`cpe:/o:redhat:enterprise_linux:10.1`
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	0:3.8.9-9.el10_0.17 ~ *	`cpe:/o:redhat:enterprise_linux_eus:10.0`
Red Hat	Red Hat Enterprise Linux 8	0:3.6.16-8.el8_10.5 ~ *	`cpe:/a:redhat:enterprise_linux:8::appstream`
Red Hat	Red Hat Enterprise Linux 8	0:3.6.16-8.el8_10.5 ~ *	`cpe:/a:redhat:enterprise_linux:8::appstream`
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	0:3.6.14-10.el8_4.1 ~ *	`cpe:/a:redhat:rhel_aus:8.4::appstream`
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	0:4.13-3.el8_4.1 ~ *	`cpe:/a:redhat:rhel_aus:8.4::appstream`
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	0:3.6.14-10.el8_4.1 ~ *	`cpe:/a:redhat:rhel_aus:8.4::appstream`
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	0:4.13-3.el8_4.1 ~ *	`cpe:/a:redhat:rhel_aus:8.4::appstream`
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	0:3.6.16-5.el8_6.5 ~ *	`cpe:/a:redhat:rhel_aus:8.6::appstream`
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	0:4.13-3.el8_6.2 ~ *	`cpe:/a:redhat:rhel_aus:8.6::appstream`
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	0:3.6.16-5.el8_6.5 ~ *	`cpe:/a:redhat:rhel_aus:8.6::appstream`
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	0:4.13-3.el8_6.2 ~ *	`cpe:/a:redhat:rhel_aus:8.6::appstream`
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	0:3.6.16-7.el8_8.4 ~ *	`cpe:/a:redhat:rhel_e4s:8.8::appstream`
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	0:4.13-4.el8_8.1 ~ *	`cpe:/a:redhat:rhel_e4s:8.8::appstream`
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	0:3.6.16-7.el8_8.4 ~ *	`cpe:/a:redhat:rhel_e4s:8.8::appstream`
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	0:4.13-4.el8_8.1 ~ *	`cpe:/a:redhat:rhel_e4s:8.8::appstream`
Red Hat	Red Hat Enterprise Linux 9	0:3.8.3-10.el9_7 ~ *	`cpe:/a:redhat:enterprise_linux:9::appstream`
Red Hat	Red Hat Enterprise Linux 9	0:3.8.3-10.el9_7 ~ *	`cpe:/a:redhat:enterprise_linux:9::appstream`
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	0:3.7.6-21.el9_2.5 ~ *	`cpe:/a:redhat:rhel_e4s:9.2::appstream`
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	0:3.8.3-4.el9_4.5 ~ *	`cpe:/a:redhat:rhel_eus:9.4::appstream`
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	0:3.8.3-6.el9_6.3 ~ *	`cpe:/a:redhat:rhel_eus:9.6::appstream`
Red Hat	RHEL-8 based Middleware Containers	7.13.5-4.1777325677 ~ *	`cpe:/a:redhat:rhosemc:1.0::el8`
Red Hat	RHEL-8 based Middleware Containers	7.13.5-4.1777325711 ~ *	`cpe:/a:redhat:rhosemc:1.0::el8`
Red Hat	RHEL-8 based Middleware Containers	7.13.5-4.1777325710 ~ *	`cpe:/a:redhat:rhosemc:1.0::el8`
Red Hat	RHEL-8 based Middleware Containers	7.13.5-3.1777325680 ~ *	`cpe:/a:redhat:rhosemc:1.0::el8`
Red Hat	RHEL-8 based Middleware Containers	7.13.5-4.1777325709 ~ *	`cpe:/a:redhat:rhosemc:1.0::el8`
Red Hat	RHEL-8 based Middleware Containers	7.13.5-4.1777325680 ~ *	`cpe:/a:redhat:rhosemc:1.0::el8`
Red Hat	RHEL-8 based Middleware Containers	7.13.5-4.1777325708 ~ *	`cpe:/a:redhat:rhosemc:1.0::el8`
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18	1791459707 ~ *	`cpe:/a:redhat:cert_manager:1.18::el9`

II. Public POCs for CVE-2025-14831

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2025-14831

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Vendor Advisories for CVE-2025-14831 (27)

Verifying Certificates with large amout of name constraints and subject alternative names makes GnuTLS vulnerable to DoS attacks (#1773) · Issue · gnutls/gnutls
https://access.redhat.com/errata/RHSA-2026:8747 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7329 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8748 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7335 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:6738 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8746 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5606 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:6618 vendor-advisory x_refsource_REDHAT
RHSA-2026:4943 - Security Advisory - Red Hat Customer Portal vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5585 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:4655 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:6737 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:4188 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:6630 vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:16174 vendor-advisory x_refsource_REDHAT
🔗 RHSA-2026:82354 - Security Advisory - Red Hat Customer Portal vendor-advisory x_refsource_REDHAT
🔗 RHSA-2026:30850 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
🔗 RHSA-2026:30849 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
🔗 RHSA-2026:13812 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:16009 vendor-advisory x_refsource_REDHAT
🔗 RHSA-2026:82857 - Security Advisory - Red Hat Customer Portal vendor-advisory x_refsource_REDHAT
🔗 RHSA-2026:33125 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
🔗 RHSA-2026:25096 - Security Advisory - Red Hat Customer Portal vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:16008 vendor-advisory x_refsource_REDHAT
🔗 RHSA-2026:82372 - Security Advisory - Red Hat Customer Portal vendor-advisory x_refsource_REDHAT
🔗 RHSA-2026:82347 - Security Advisory - Red Hat Customer Portal vendor-advisory x_refsource_REDHAT

https://www.cve.org/CVERecord?id=CVE-2025-14831

IV. Related Vulnerabilities

Same weakness: CWE-407