Description
Cilium is a networking, observability, and security solution. Prior to 1.17.14, 1.18.8, and 1.19.2, when Cilium L7 functionality is enabled, the embedded or standalone Envoy instance creates a world-accessible admin.sock on cluster nodes, allowing a local attacker to access Envoy admin endpoints, expose TLS secrets, disrupt cluster traffic, or terminate Envoy. This issue is fixed in versions 1.17.14, 1.18.8, and 1.19.2.
Affected products
cilium: cilium
References6
- github.com/cilium/cilium/security/advisories/GHSA-3fcv-jvfp-m4q9 PatchVendor Advisory
- github.com/cilium/cilium/commit/7bfbdd5c1be83d6c9ba3e089b4c804b… Patch
- github.com/cilium/cilium/pull/44512 Patch
- github.com/cilium/cilium/releases/tag/v1.17.14 Release Notes
- github.com/cilium/cilium/releases/tag/v1.18.8 Release Notes
- github.com/cilium/cilium/releases/tag/v1.19.2 Release Notes
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 15 November 2026
- CWE
- CWE-732
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.