CVE record · CVE-2025-9820

Gnutls: stack-based buffer overflow in gnutls_pkcs11_token_init() function

CVSS 4.0 MediumEPSS 0.0022 · 12th percentile

Published by the CVE Program (CNA: redhat) at 26 Jan 2026, 19:58 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Not given	Not given Package name: gnutls https://gitlab.com/gnutls/gnutls	affected 3.8.1 affected 3.8.2 affected 3.8.3 affected 3.8.4 affected 3.8.5 affected 3.8.6 affected 3.8.7 affected 3.8.8 affected 3.8.9 affected 3.8.10
Red Hat	Red Hat Enterprise Linux 10 Package name: gnutls https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.8.10-3.el10_1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: gnutls https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.6.16-8.el8_10.5 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: gnutls https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.6.16-8.el8_10.5 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: gnutls https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.8.3-10.el9_7 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: gnutls https://access.redhat.com/downloads/content/package-browser/	unaffected 0:3.8.3-10.el9_7 to before * rpm Other versions: affected
Red Hat	RHEL-8 based Middleware Containers Package name: rhpam-7/rhpam-businesscentral-monitoring-rhel8 https://catalog.redhat.com/software/containers/	unaffected 7.13.5-4.1777325677 to before * rpm Other versions: affected
Red Hat	RHEL-8 based Middleware Containers Package name: rhpam-7/rhpam-businesscentral-rhel8 https://catalog.redhat.com/software/containers/	unaffected 7.13.5-4.1777325711 to before * rpm Other versions: affected
Red Hat	RHEL-8 based Middleware Containers Package name: rhpam-7/rhpam-controller-rhel8 https://catalog.redhat.com/software/containers/	unaffected 7.13.5-4.1777325710 to before * rpm Other versions: affected
Red Hat	RHEL-8 based Middleware Containers Package name: rhpam-7/rhpam-dashbuilder-rhel8 https://catalog.redhat.com/software/containers/	unaffected 7.13.5-3.1777325680 to before * rpm Other versions: affected
Red Hat	RHEL-8 based Middleware Containers Package name: rhpam-7/rhpam-kieserver-rhel8 https://catalog.redhat.com/software/containers/	unaffected 7.13.5-4.1777325709 to before * rpm Other versions: affected
Red Hat	RHEL-8 based Middleware Containers Package name: rhpam-7/rhpam-process-migration-rhel8 https://catalog.redhat.com/software/containers/	unaffected 7.13.5-4.1777325680 to before * rpm Other versions: affected
Red Hat	RHEL-8 based Middleware Containers Package name: rhpam-7/rhpam-smartrouter-rhel8 https://catalog.redhat.com/software/containers/	unaffected 7.13.5-4.1777325708 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18 Package name: cert-manager/jetstack-cert-manager-acmesolver-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1791459707 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18 Package name: cert-manager/jetstack-cert-manager-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1791459711 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18 Package name: cert-manager/cert-manager-istio-csr-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1791459759 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18 Package name: cert-manager/cert-manager-operator-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1789029076 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18 Package name: cert-manager/cert-manager-operator-bundle https://catalog.redhat.com/software/containers/	unaffected 1791966259 to before * rpm Other versions: affected
Red Hat	Red Hat Ceph Storage 8 Package name: rhceph/rhceph-8-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1774002867 to before * rpm Other versions: affected
Red Hat	Red Hat Discovery 2 Package name: discovery/discovery-server-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1775668717 to before * rpm Other versions: affected
Red Hat	Red Hat Discovery 2 Package name: discovery/discovery-ui-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1775675922 to before * rpm Other versions: affected
Red Hat	Red Hat Hardened Images Package name: gnutls-main https://catalog.redhat.com/software/containers/	unaffected 3.8.12-1.1.hum1 to before * rpm Other versions: affected
Red Hat	Red Hat Insights proxy 1.5 Package name: insights-proxy/insights-proxy-container-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1773685509 to before * rpm Other versions: affected
Red Hat	Red Hat Update Infrastructure 5 Package name: rhui5/cds-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1773670073 to before * rpm Other versions: affected
Red Hat	Red Hat Update Infrastructure 5 Package name: rhui5/haproxy-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1773672059 to before * rpm Other versions: affected
Red Hat	Red Hat Update Infrastructure 5 Package name: rhui5/installer-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1773668803 to before * rpm Other versions: affected
Red Hat	Red Hat Update Infrastructure 5 Package name: rhui5/rhua-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1773670137 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 6 Package name: gnutls https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat Enterprise Linux 7 Package name: gnutls https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-8 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-9 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected

Identifiers: CVE-2025-9820
CNA: redhat
Weakness (CWE): CWE-121
Tags: Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat RHEL-8 based Middleware Containers
Cert Manager support for Red Hat OpenShift release 1.18
Red Hat Ceph Storage 8
Red Hat Discovery 2
Red Hat Hardened Images
Memory corruption
Published: 26 Jan 2026
Updated: 14 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
4.0	Medium	3.1	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0022, the 12th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 26 Jan 2026. New records show when each source confirmed them.

Sources

References from the CNA

access.redhat.com/errata/RHSA-2026:13812 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:3477 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:4188 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:4655 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:4943 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:5585 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:5606 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:7329 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:7477 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:82347 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:82354 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:82372 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:82857 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2025-9820 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2392528 issue-trackingredhat
gitlab.com/gnutls/gnutls/-/commit/1d56f96f6ab5034d677136b9d50b5a75dff0faf5
gitlab.com/gnutls/gnutls/-/issues/1732
www.gnutls.org/security-new.html#GNUTLS-SA-2025-11-18

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.