CVE-2025-64324

KubeVirt Vulnerable to Arbitrary Host File Read and Write

State: Published
Severity: 8.5 High
Published: Nov 18, 2025
Updated: Feb 26, 2026
Reserved: Oct 30, 2025

Description

KubeVirt is a virtual machine management add-on for Kubernetes. The `hostDisk` feature in KubeVirt allows mounting a host file or directory owned by the user with UID 107 into a VM. However, prior to version 1.6.1 and 1.7.0, the implementation of this feature and more specifically the `DiskOrCreate` option (which creates a file if it doesn't exist) has a logic bug that allows an attacker to read and write arbitrary files owned by more privileged users on the host system. Versions 1.6.1 and 1.7.0 fix the issue.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-732 Incorrect Permission Assignment for Critical Resource

Affected Products

Product	Versions
kubevirtkubevirt	before 1.6.1Affected 1.7.0-alpha.0 to before 1.7.0-rc.0Affected

References

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