CVE-2025-12748
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
11/11/2025
Last modified:
12/11/2025
Description
A flaw was discovered in libvirt in the XML file processing. More specifically, the parsing of user provided XML files was performed before the ACL checks. A malicious user with limited permissions could exploit this flaw by submitting a specially crafted XML file, causing libvirt to allocate too much memory on the host. The excessive memory consumption could lead to a libvirt process crash on the host, resulting in a denial-of-service condition.
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM