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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-6021 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://access.redhat.com/errata/RHSA-2025:10630 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:10698 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:10699 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:11580 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:12098 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:12099 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:12199 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:12237 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:12239 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:12240 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:12241 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:13267 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:13289 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:13325 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:13335 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:13336 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:14059 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:14396 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:15308 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:15672 Red Hat, Inc.
https://access.redhat.com/security/cve/CVE-2025-6021 Red Hat, Inc.
https://bugzilla.redhat.com/show_bug.cgi?id=2372406 Red Hat, Inc.
https://gitlab.gnome.org/GNOME/libxml2/-/issues/926 CISA-ADP

Weakness Enumeration

CWE-ID CWE Name Source
CWE-121 Stack-based Buffer Overflow Red Hat, Inc.  

Change History

17 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-6021
NVD Published Date:
06/12/2025
NVD Last Modified:
09/18/2025
Source:
Red Hat, Inc.