CVE-2025-12748
Deferred Deferred - Pending Action
BaseFortify

Publication date: 2025-11-11

Last updated on: 2026-05-19

Assigner: Red Hat, Inc.

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.
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Meta Information
Published
2025-11-11
Last Modified
2026-05-19
Generated
2026-06-16
AI Q&A
2025-11-11
EPSS Evaluated
2026-06-15
NVD
CVE-2025-12748
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
libvirt libvirt 3.1
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
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Executive Summary

This vulnerability is a flaw in libvirt's XML file processing where user-provided XML files are parsed before access control checks are performed. A malicious user with limited permissions can exploit this by submitting a specially crafted XML file that causes libvirt to allocate excessive memory on the host, potentially leading to a process crash.

Impact Analysis

The vulnerability can cause excessive memory consumption on the host running libvirt, which may lead to a libvirt process crash and result in a denial-of-service (DoS) condition, disrupting services relying on libvirt.

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