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Servers and applications

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. This issue can result in memory corruption or a denial of service when processing crafted input.

Severity
High 7.5
Published
12 Jun 2025
Last changed
12 Oct 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.14.4
Sources
NVD

Affected software

SoftwareAffected versions
libxml2Servers and applications · cpe:a:xmlsoft:libxml2
  • Every version before 2.14.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-6021
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-6021