CVE-2025-49794
Libxml: heap use after free (uaf) leads to denial of service (dos)
9.1CVSSCRITICAL
Description
A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the <sch:name path="..."/> schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
and 39 more affected products View all →
Exploitability
Official Patch Available
Workaround Available
References
https://access.redhat.com/errata/RHSA-2025:10630
access.redhat.com
https://access.redhat.com/errata/RHSA-2025:10698
access.redhat.com
https://access.redhat.com/errata/RHSA-2025:10699
access.redhat.com
and 118 more references View all →
Timeline
Published
Jun 16, 2025
Last Updated
Jun 2, 2026
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