Vulnerability in KubeVirt's Virtual Machine Management for Kubernetes
CVE-2025-64436

6.9MEDIUM

Key Information:

Vendor

Kubevirt

Status
Kubevirt
Vendor
CVE Published:
7 November 2025

What is CVE-2025-64436?

KubeVirt, a crucial add-on for managing virtual machines within Kubernetes environments, has a vulnerability that arises from improper permissions assigned to the virt-handler service account. In versions 1.5.0 and earlier, these permissions can be exploited by malicious actors to force a virtual machine instance (VMI) to migrate to a node under their control. By leveraging this flaw, an attacker could manipulate node statuses, potentially making all nodes unschedulable and creating a pathway to deploy privileged pods on compromised nodes. This poses a significant risk to the integrity and security of Kubernetes deployments using KubeVirt.

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Affected Version(s)

kubevirt <= 1.5.0

References

https://github.com/kubevirt/kubevirt/security/advisories/...
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CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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