Improper Authorization in Kubernetes - CVE-2025-4563
Published: June 26, 2025
Vulnerability identifier: #VU111971
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:L/SI:L/SA:L/E:U/U:Clear
CVE-ID: CVE-2025-4563
CWE-ID: CWE-285
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Kubernetes
Affected software:
Kubernetes
Kubernetes
Detailed vulnerability description
The vulnerability allows a malicious node to bypass dynamic resource allocation authorization checks.
The vulnerability exists due to missing authorization checks in DynamicResourceAllocation feature gate within the NodeRestriction admission controller. A malicious node can create mirror pods that access unauthorized dynamic resources, leading to denial of service or potential privilege escalation.
How to mitigate CVE-2025-4563
Install updates from vendor's website.