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.

Metrics

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00034.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Cilium
  • Cilium

Configuration 1 [-]

OR cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*
cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*

No data.

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Vendors Products
Cilium
  • Cilium
Advisories
Source ID Title
EUVD EUVD EUVD-2025-8006 Cilium node based network policies may incorrectly allow workload traffic
Github GHSA Github GHSA GHSA-c6pf-2v8j-96mc Cilium node based network policies may incorrectly allow workload traffic
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://docs.cilium.io/en/stable/security/policy/language/#node-based cve-icon cve-icon cve-icon
https://github.com/cilium/cilium/pull/36657 cve-icon cve-icon cve-icon
https://github.com/cilium/cilium/security/advisories/GHSA-c6pf-2v8j-96mc cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-30163 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-30163 cve-icon
History

Thu, 04 Sep 2025 16:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*

Wed, 26 Mar 2025 02:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Low

Mon, 24 Mar 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 24 Mar 2025 19:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Node based network policies may incorrectly allow workload traffic
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 3.4, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-03-24T19:29:46.075Z

Reserved: 2025-03-17T12:41:42.567Z

Link: CVE-2025-30163

cve-icon Vulnrichment

Updated: 2025-03-24T19:29:42.821Z

cve-icon NVD

Status : Analyzed

Published: 2025-03-24T19:15:52.937

Modified: 2025-09-04T15:51:32.597

Link: CVE-2025-30163

cve-icon Redhat

Severity : Low

Publid Date: 2025-03-24T18:46:35Z

Links: CVE-2025-30163 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T15:26:06Z