SecuriTricks - CVE-2025-5187

Description

A vulnerability exists in the NodeRestriction admission controller in Kubernetes clusters where node users can delete their corresponding node object by patching themselves with an OwnerReference to a cluster-scoped resource. If the OwnerReference resource does not exist or is subsequently deleted, the given node object will be deleted via garbage collection.

Product(s) Impacted

Vendor	Product	Versions
Kubernetes	Kubernetes	*

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-863

Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	kubernetes	kubernetes	/	/	/	/	/	/	/	/

References

https://github.com/kubernetes/kubernetes/issues/133471

https://groups.google.com/g/kubernetes-security-announce/c/znSNY7XCztE

CVSS Score

6.7 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: HIGH
Scope: UNCHANGED
Confidentiality Impact: HIGH
Integrity Impact: HIGH
Availability Impact: LOW

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L

View Vector String

Timeline

Published: Aug. 27, 2025, 5:15 p.m.
Last Modified: Aug. 27, 2025, 5:15 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

jordan@liggitt.net

CVE-2025-5187