CVE-2025-30162: Cilium

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. For Cilium users who use Gateway API for Ingress for some services and use LB-IPAM or BGP for LB Service implementation and use network policies to block egress traffic from workloads in a namespace to workloads in other namespaces, egress traffic from workloads covered by such network policies to LoadBalancers configured by `Gateway` resources will incorrectly be allowed. LoadBalancer resources not deployed via a Gateway API configuration are not affected by this issue. This issue affects: Cilium v1.15 between v1.15.0 and v1.15.14 inclusive, 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 v1.15.15, v1.16.8, and v1.17.2. A Clusterwide Cilium Network Policy can be used to work around this issue for users who are unable to upgrade.

Affected products

• Cilium Cilium: from 1.15.0, before 1.15.15 (fixed in 1.15.15); from 1.16.0, before 1.16.8 (fixed in 1.16.8); from 1.17.0, before 1.17.2 (fixed in 1.17.2)

Published 2025-03-24. Last modified 2026-06-17.