# CVE-2025-64437: GO-2025-4102 - KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes in kubevirt.io/kubevirt

Source: https://junglewise.ai/threats/cve-2025-64437-kubevirt-isolation-detection-flaw-allows-arbitrary-file  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-11-17  
License: CC BY 4.0 with a link back

CVE-2025-64437 · Severity: low · CVSS 3.1 · Published 2025-11-17

KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes in kubevirt.io/kubevirt

Technologies: [kubevirt.io/kubevirt (Go)](https://junglewise.ai/threats/technologies/kubevirt-io-kubevirt). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2025-64437 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-64437 being exploited in the wild.

**How severe is CVE-2025-64437?** Low severity, with a CVSS score of 3.1, published 17 November 2025.

**Which products and versions are affected?** kubevirt.io/kubevirt (Go) SEMVER:introduced=0,fixed=1.5.3, SEMVER:introduced=0,fixed=1.5.3,introduced=1.6.0-alpha.0,fixed=1.6.0-beta.0.0.20250801202148-3ce9f41c54d0.

**Is there a fix for CVE-2025-64437?** Yes. kubevirt.io/kubevirt (Go): upgrade to 1.5.3, 1.6.0-beta.0.0.20250801202148-3ce9f41c54d0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-64437?** Check whether you run kubevirt.io/kubevirt (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- kubevirt.io/kubevirt (Go): upgrade to 1.5.3, 1.6.0-beta.0.0.20250801202148-3ce9f41c54d0 or later

  ```sh
  go get kubevirt.io/kubevirt@v1.6.0-beta.0.0.20250801202148-3ce9f41c54d0
  ```


## Affected products

- kubevirt.io/kubevirt (Go) SEMVER:introduced=0,fixed=1.5.3, SEMVER:introduced=0,fixed=1.5.3,introduced=1.6.0-alpha.0,fixed=1.6.0-beta.0.0.20250801202148-3ce9f41c54d0

## Identifiers

- CVE-2025-64437
- GHSA-2r4r-5x78-mvqf
- GO-2025-4102

## Related threats

- [KubeVirt unbounded memory allocation in virt-handler virtio-serial server](https://junglewise.ai/threats/cve-2026-13322-kubevirt-unbounded-memory-allocation-in-virt-handler-virtio)
- [KubeVirt SSRF in virt-api port-forward handler](https://junglewise.ai/threats/cve-2026-13318-kubevirt-ssrf-in-virt-api-port-forward-handler)
- [KubeVirt virt-handler symlink following in WriteToCachedFile](https://junglewise.ai/threats/cve-2026-13218-kubevirt-virt-handler-symlink-following-in-writetocachedfile)
- [KubeVirt path traversal in virt-exportserver via symlink escape](https://junglewise.ai/threats/cve-2026-9804-kubevirt-path-traversal-in-virt-exportserver-via-symlink-escape)
- [KubeVirt virt-handler privilege escalation via symlink following](https://junglewise.ai/threats/cve-2026-7374-kubevirt-virt-handler-privilege-escalation-via-symlink-following)