CVE-2025-4563
Kubernetes allows nodes to bypass dynamic resource allocation authorization checks in k8s.io/kubernetes
Description
A vulnerability exists in the NodeRestriction admission controller where nodes can bypass dynamic resource allocation authorization checks. When the DynamicResourceAllocation feature gate is enabled, the controller properly validates resource claim statuses during pod status updates but fails to perform equivalent validation during pod creation. This allows a compromised node to create mirror pods that access unauthorized dynamic resources, potentially leading to privilege escalation.
How to fix CVE-2025-4563
To remediate CVE-2025-4563, upgrade the affected package to a fixed version below.
- —upgrade to 1.20.5+really1.20.2-1 or later
- —upgrade to 1.32.6 or later
- —upgrade to 1.32.6 or later
Is CVE-2025-4563 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.20.5+really1.20.2-1
- >= 1.32.0, < 1.32.6
- >= 1.32.0, < 1.32.6, >= 1.33.0, < 1.33.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L |