Home/CVE/Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Node based network policies (
CVE

CVE-2025-30163

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Node based network policies (

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.

LOW · CVSS 3.4 EPSS 0.00079
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-863Incorrect Authorization
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Affected Products & Versions

2
cilium>= 1.16.0 and < 1.16.8
cilium>= 1.17.0 and < 1.17.2
▤

Affected Packages

2
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go Ciliumgithub.com/cilium/cilium LOW fixed in 1.17.2
Go github.com/cilium/cilium LOW fixed in 1.16.8
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Scoring & Timeline

3.4
LOW · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD24 Mar 2025 · 07:15 PM
CVSS VectorCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
suse-csafopenSUSE-SU-2025:14937-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://docs.cilium.io/en/stable/security/policy/language/#node-basedProduct
https://github.com/cilium/cilium/pull/36657Patch
https://github.com/cilium/cilium/security/advisories/GHSA-c6pf-2v8j-96mcMitigationPatchThird Party Advisory
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