Symbolic Link Vulnerability in KubeVirt by Red Hat
CVE-2025-64433

6.5MEDIUM

Key Information:

Vendor

Kubevirt

Status
Kubevirt
Vendor
CVE Published:
7 November 2025

What is CVE-2025-64433?

A vulnerability in KubeVirt allows malicious users to exploit improper symbolic link handling when PVC disks are mounted into virtual machines, leading to unauthorized access to files on the virt-launcher pod's file system. This issue enables an attacker with control over a PVC to create a symbolic link that points to any file within the pod, facilitating file reading from within a guest VM. Although VMs run as an unprivileged user to limit resource access, a secondary vulnerability allows the ownership of files to be changed to this unprivileged user, effectively bypassing security restrictions. This vulnerability has been addressed in versions 1.5.3 and 1.6.1.

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Affected Version(s)

kubevirt < 1.5.3 < 1.5.3

kubevirt >= 1.6.0-alpha.0, < 1.6.1 < 1.6.0-alpha.0, 1.6.1

References

https://github.com/kubevirt/kubevirt/security/advisories/...
x_refsource_CONFIRM
https://github.com/kubevirt/kubevirt/commit/09eafa068ec01...
x_refsource_MISC
https://github.com/kubevirt/kubevirt/commit/9dc798cb1efe9...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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