VulnerabilityModified
CVE-2025-6021
A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow.
HIGH 7.5EPSS 1.27%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.27% probability · 68th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- xmlsoft/libxml2 · redhat/jboss core services · redhat/openshift container platform · redhat/openshift container platform for arm64 · redhat/openshift container platform for ibm z · redhat/openshift container platform for linuxone · redhat/openshift container platform for power · redhat/enterprise linux · redhat/enterprise linux eus · redhat/enterprise linux for arm 64 · redhat/enterprise linux for arm 64 eus · redhat/enterprise linux for ibm z systems · redhat/enterprise linux for ibm z systems eus · redhat/enterprise linux for power little endian · redhat/enterprise linux for power little endian eus · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server for power little endian update services for sap solutions · redhat/enterprise linux server tus · redhat/in-vehicle operating system
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2025:10630Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:10698Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:10699Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:11580Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:11673
- https://access.redhat.com/errata/RHSA-2025:12098Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:12099Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:12199Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:12237Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:12239Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:12240Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:12241Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:13267Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:13289Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:13325Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:13335Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:13336Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:14059Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:14396Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:15308Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:15672Third Party Advisory
- https://access.redhat.com/errata/RHSA-2025:19020
- https://access.redhat.com/errata/RHSA-2026:7519
- https://access.redhat.com/security/cve/CVE-2025-6021Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2372406Issue Tracking
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/926Exploit, Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2025/07/msg00014.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/926Exploit, Issue Tracking, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.