Improper input validation in Kubernetes
CVE-2025-4563
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.007 (50.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- Kubernetes — versions v1.32.0 - v1.32.5, v1.33.0 - v1.33.1
Weakness classification (CWE)
References
- groups.google.com/g/kubernetes-security-announce/c/Zv84LMRuvMQ (mailing-list)
- github.com/kubernetes/kubernetes/issues/132151 (issue-tracking)
Frequently asked questions
- What is CVE-2025-4563?
- CVE-2025-4563 is a low-severity vulnerability in Kubernetes, classified under Improper Input Validation. CVSS score: 2.7/10. Published 2025-06-23.
- How severe is CVE-2025-4563?
- Low severity. CVSS v3 base score is 2.7 out of 10.