Privilege escalation in Kubevirt
CVE-2025-64436
KubeVirt is a virtual machine management add-on for Kubernetes. In 1.5.0 and earlier, the permissions granted to the virt-handler service account, such as the ability to update VMI and patch nodes, could be abused to force a VMI migration to an attacker-controlled node. This vulnerability could otherwise allow an attacker to mark all nodes as unschedulable, potentially forcing the migration or creation of privileged pods onto a compromised node.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (15.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Kubevirt — versions <= 1.5.0
Weakness classification (CWE)
References
- github.com/kubevirt/kubevirt/security/advisories/GHSA-7xgm-5prm-v5gc (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-64436?
- CVE-2025-64436 is a medium-severity vulnerability in Kubevirt, classified under Improper Privilege Management. CVSS score: 5.3/10. Published 2025-11-07.
- How severe is CVE-2025-64436?
- Medium severity. CVSS v3 base score is 5.3 out of 10.