CVE-2025-6021
HIGH · CVSS 7.5EPSS 1.4%EU EUVD
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.
Key facts
- CVSS score
- 7.5 (v3.1)
- Severity
- HIGH
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
- CWE-787
- EPSS score
- 1.4% (71th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2025-18175)
- Published
- June 12, 2025
- NVD last modified
- October 12, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2025-18175 in the EU Vulnerability Database. Last updated in EUVD on October 12, 2026.
View on the EU Vulnerability DatabaseAffected products
- redhat / enterprise linux
- redhat / enterprise linux
- redhat / enterprise linux
- redhat / enterprise linux eus
- redhat / enterprise linux eus
- redhat / enterprise linux eus
- redhat / enterprise linux eus
- redhat / enterprise linux eus
- redhat / enterprise linux eus
- redhat / enterprise linux for arm 64
- redhat / enterprise linux for arm 64
- redhat / enterprise linux for arm 64
- redhat / enterprise linux for arm 64
- redhat / enterprise linux for arm 64 eus
- redhat / enterprise linux for arm 64 eus
- redhat / enterprise linux for arm 64 eus
- redhat / enterprise linux for ibm z systems
- redhat / enterprise linux for ibm z systems
- redhat / enterprise linux for ibm z systems
- redhat / enterprise linux for ibm z systems eus
- redhat / enterprise linux for ibm z systems eus
- redhat / enterprise linux for ibm z systems eus
- redhat / enterprise linux for ibm z systems eus
- redhat / enterprise linux for power little endian
- redhat / enterprise linux for power little endian
- redhat / enterprise linux for power little endian
- redhat / enterprise linux for power little endian eus
- redhat / enterprise linux for power little endian eus
- redhat / enterprise linux for power little endian eus
- redhat / enterprise linux server
- redhat / enterprise linux server aus
- redhat / enterprise linux server aus
- redhat / enterprise linux server aus
- redhat / enterprise linux server aus
- redhat / enterprise linux server aus
- 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
- redhat / jboss core services
- redhat / openshift container platform
- redhat / openshift container platform
- redhat / openshift container platform
- redhat / openshift container platform
- redhat / openshift container platform
- redhat / openshift container platform
- redhat / openshift container platform
- redhat / openshift container platform for arm64
- redhat / openshift container platform for arm64
- redhat / openshift container platform for arm64
and 22 more…
Certified products that may be affected
34 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Red Hat Enterprise Linux 8 NSS Cryptographic Module - Red Hat, Inc. - FIPS 140 5513 - active
- Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, LLC - FIPS 140 5461 - active
- Red Hat Enterprise Linux 9 Kernel Cryptographic API - Red Hat, Inc. - FIPS 140 5445 - active
- Red Hat Enterprise Linux 9 libgcrypt - Red Hat, Inc. - FIPS 140 5366 - active
- Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, Inc. - FIPS 140 5089 - active
See all 34 in the Security Certifications Explorer.
References
- https://access.redhat.com/errata/RHSA-2025:10630(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:10698(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:10699(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:11580(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:11673
- https://access.redhat.com/errata/RHSA-2025:12098(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:12099(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:12199(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:12237(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:12239(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:12240(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:12241(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:13267(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:13289(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:13325(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:13335(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:13336(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:14059(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:14396(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:15308(Third Party Advisory)
- https://access.redhat.com/errata/RHSA-2025:15672(Third 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-2025-6021(Third Party Advisory)
- https://bugzilla.redhat.com/show_bug.cgi?id=2372406(Issue Tracking)
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/926(Exploit, Issue Tracking, Vendor Advisory)
- https://lists.debian.org/debian-lts-announce/2025/07/msg00014.html
Last updated October 14, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain