CVE-2025-6021
HIGH severity · CVSS 7.5 · Out-of-bounds write
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://access.redhat.com/errata/RHSA-2025:10630Advisory
- https://access.redhat.com/errata/RHSA-2025:10698Advisory
- https://access.redhat.com/errata/RHSA-2025:10699Advisory
- https://access.redhat.com/errata/RHSA-2025:11580Advisory
- https://access.redhat.com/errata/RHSA-2025:11673
- https://access.redhat.com/errata/RHSA-2025:12098Advisory
- https://access.redhat.com/errata/RHSA-2025:12099Advisory
- https://access.redhat.com/errata/RHSA-2025:12199Advisory