CVE-2013-4154: The qemuAgentCommand function in libvirt before 1.1.1, when a guest agent is not configured, allows remote...

Security readout for executives and security teams

CVE-2013-4154 is a libvirt denial-of-service flaw. On versions before 1.1.1, certain guest-agent CPU operations can crash libvirtd when no guest agent is configured. Business impact is interruption to virtualization management, not evidence of data theft or code execution from the supplied sources. Exposure is most likely on systems running libvirt before 1.1.1, especially where libvirt management APIs or tools are reachable by untrusted users. The supplied affected-product metadata is incomplete, so distribution-specific package exposure needs local verification. Treat as a targeted availability risk to virtualization operations. Prioritize remediation on shared, remotely managed, or multi-tenant virtualization hosts, while recognizing the supplied evidence does not indicate active exploitation or compromise of guest data. Mitigation focus: Upgrade libvirt to 1.1.1 or a vendor-backported fixed package.; Check vendor advisories for distribution-specific fixed package versions.; Restrict libvirt management access to trusted administrators only..

Prepared

Jun 14, 2026, 15:32 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.