CVE record · CVE-2025-6021

Libxml2: integer overflow in xmlbuildqname() leads to stack buffer overflow in libxml2

CVSS 7.5 HighEPSS 0.014 · 71st percentile

Published by the CVE Program (CNA: redhat) at 12 Jun 2025, 12:49 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: libxml2 https://gitlab.gnome.org/GNOME/libxml2/	affected before 2.14.4 semver Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 10 Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.12.5-7.el10_0 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.1-6.el7_9.10 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.7-21.el8_10.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.7-21.el8_10.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.7-9.el8_2.3 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.7-9.el8_4.6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.7-9.el8_4.6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.7-13.el8_6.10 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Telecommunications Update Service Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.7-13.el8_6.10 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.7-13.el8_6.10 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.7-16.el8_8.9 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.7-16.el8_8.9 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.13-10.el9_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.13-10.el9_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.13-1.el9_0.5 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.13-3.el9_2.7 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.9.13-10.el9_4 to before * rpm Other versions: affected
Red Hat	Red Hat JBoss Core Services 2.4.62.SP2 Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat OpenShift Container Platform 4.12 Package name: openshift/ose-rhel-coreos-8 https://access.redhat.com/downloads/content/package-browser/	unaffected 412.86.202509030110-0 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4.13 Package name: openshift/ose-rhel-coreos-9 https://access.redhat.com/downloads/content/package-browser/	unaffected 413.92.202509030117-0 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4.14 Package name: openshift/ose-rhel-coreos-9 https://catalog.redhat.com/software/containers/	unaffected 414.92.202508041909-0 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4.15 Package name: openshift/ose-rhel-coreos-9 https://access.redhat.com/downloads/content/package-browser/	unaffected 415.92.202508192014-0 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4.16 Package name: openshift/ose-rhel-coreos-9 https://catalog.redhat.com/software/containers/	unaffected 416.94.202508050040-0 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4.17 Package name: openshift/ose-rhel-coreos-9 https://access.redhat.com/downloads/content/package-browser/	unaffected 417.94.202508141510-0 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4.18 Package name: openshift/ose-rhel-coreos-9 https://catalog.redhat.com/software/containers/	unaffected 418.94.202508060022-0 to before * rpm Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4.19 Package name: openshift/ose-rhel-coreos-9 https://catalog.redhat.com/software/containers/	unaffected 4.19.9.6.202507230107-0 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 2.0.1-1754478727 to before * rpm Other versions: affected
Red Hat	Red Hat Hardened Images Package name: libxml2-main https://catalog.redhat.com/software/containers/	unaffected 2.15.2-0.3.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 1.5.5-1754504343 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 6 Package name: libxml2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unknown

Identifiers: CVE-2025-6021
CNA: redhat
Weakness (CWE): CWE-787
Tags: Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.2 Advanced Update Support
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Memory corruption
Published: 12 Jun 2025
Updated: 5 Nov 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
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.014, the 71st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

12 Jun 2025, 12:49 UTC Confirmed by the CVE List
12 Jun 2025, 13:15 UTC Confirmed by NVD

Sources

References from the CNA

access.redhat.com/errata/RHSA-2025:10630 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:10698 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:10699 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:11580 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:11673 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:12098 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:12099 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:12199 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:12237 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:12239 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:12240 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:12241 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:13267 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:13289 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:13325 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:13335 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:13336 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:14059 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:14396 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:15308 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:15672 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2025:19020 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:7519 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2025-6021 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2372406 issue-trackingredhat
gitlab.gnome.org/GNOME/libxml2/-/issues/926

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.