What’s Vulnerable › Vulnerabilities

CVE-2025-64324: KubeVirt Vulnerable to Arbitrary Host File Read and Write

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-11-18 · updated 2026-10-19
• Weakness: CWE-200

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.

Affected products

• kubevirt: before 1.6.1; 1.7.0-alpha0, 1.7.0-beta0 — fixed in 1.6.1

How to fix

Upgrade to a fixed version: kubevirt 1.6.1. Check the vendor advisory for mitigations.

References

• https://github.com/kubevirt/kubevirt/commit/00d03e43e3bf03e563136695a4732b65ed42d764
• https://github.com/kubevirt/kubevirt/commit/ff3b69b08b6b9c8d08d23735ca8d82455f790a69
• https://github.com/kubevirt/kubevirt/pull/15037
• https://github.com/kubevirt/kubevirt/security/advisories/GHSA-46xp-26xh-hpqh

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