CVE-2025-30163 LOW

CVE-2025-30163: Node based network policies may incorrectly allow workload traffic

Vendor Cilium
Product cilium
Weakness CWE-863 · Incorrect authorization
Published March 24, 2025
Last update March 24, 2025

CVSS base score

3.4/10
Attack vector Adjacent
Attack complexity High
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Node based network policies (`fromNodes` and `toNodes`) will incorrectly permit traffic to/from non-node endpoints that share the labels specified in `fromNodes` and `toNodes` sections of network policies. Node based network policy is disabled by default in Cilium. This issue affects: Cilium v1.16 between v1.16.0 and v1.16.7 inclusive and v1.17 between v1.17.0 and v1.17.1 inclusive. This issue is fixed in Cilium v1.16.8 and v1.17.2. Users can work around this issue by ensuring that the labels used in `fromNodes` and `toNodes` fields are used exclusively by nodes and not by other endpoints.

Key dates

02Disclosure timeline

March 24, 2025 CVE published
March 24, 2025 Record updated