East-west traffic not subject to egress policy enforcement for requests via Gateway API load balancers
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Partial Red Hat: 11 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-863.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| cilium | cilium | 1.16.0 to before 1.16.8; 1.17.0 to before 1.17.2; 1.15.0 to before 1.15.15 | 1.16.8, 1.17.2, 1.15.15 | Patch available | CNA |
| — | github.com/cilium/cilium (Go) | 1.16.0 to before 1.16.8 | 1.16.8 | Patch available | GHSA-24qp-4xx8-3jvj |
| — | github.com/cilium/cilium (Go) | 1.17.0 to before 1.17.2 | 1.17.2 | Patch available | GHSA-24qp-4xx8-3jvj |
| — | github.com/cilium/cilium (Go) | 1.15.0 to before 1.15.15 | 1.15.15 | Patch available | GHSA-24qp-4xx8-3jvj |
- cilium Vendorcilium Affected 1.16.0 to before 1.16.8; 1.17.0 to before 1.17.2; 1.15.0 to before 1.15.15 Fixed in 1.16.8, 1.17.2, 1.15.15 Patch available CNA
- github.com/cilium/cilium (Go) Vendor— Affected 1.16.0 to before 1.16.8 Fixed in 1.16.8 Patch available GHSA-24qp-4xx8-3jvj
- github.com/cilium/cilium (Go) Vendor— Affected 1.17.0 to before 1.17.2 Fixed in 1.17.2 Patch available GHSA-24qp-4xx8-3jvj
- github.com/cilium/cilium (Go) Vendor— Affected 1.15.0 to before 1.15.15 Fixed in 1.15.15 Patch available GHSA-24qp-4xx8-3jvj
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* | 1.15.0 to before 1.15.15; 1.16.0 to before 1.16.8; 1.17.0 to before 1.17.2 | Vulnerable | cilium |
- cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* Versions 1.15.0 to before 1.15.15; 1.16.0 to before 1.16.8; 1.17.0 to before 1.17.2 Vulnerable ·cilium
Remediation
- Fix · CNA cilium (cilium) Fixed in 1.16.8, 1.17.2, 1.15.15
- Fix · GHSA-24qp-4xx8-3jvj github.com/cilium/cilium (Go) Fixed in 1.16.8 Advisory →
- Fix · GHSA-24qp-4xx8-3jvj github.com/cilium/cilium (Go) Fixed in 1.17.2 Advisory →
- Fix · GHSA-24qp-4xx8-3jvj github.com/cilium/cilium (Go) Fixed in 1.15.15 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Network Observability Operator | Affected | No fix yet: Fix deferred |
| OpenShift Developer Tools and Services | Affected | No fix yet: Fix deferred |
| OpenShift Service Mesh 2 | Affected | No fix yet: Fix deferred |
| Power monitoring for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Virtualization 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift distributed tracing 3 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-30162
- 2026-10-03 Alias added: GHSA-24qp-4xx8-3jvj
References
More Cilium vulnerabilities
- TI-2024-32092 CIDR deny policies may not take effect when a more narrow CIDR allow is present CVSS 3.1HIGH 8.7
- TI-2023-12305 Cilium eBPF filters may be temporarily removed during agent restart CVSS 3.1CRITICAL 9.8
- TI-2023-20486 Cilium NetworkPolicy bypass via pod labels CVSS 3.1CRITICAL 9.0
- TI-2022-11721 Incorrect Default Permissions in Cilium CVSS 3.1HIGH 8.8
- TI-2026-36600 Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access CVSS 3.1CRITICAL 9.2
- TI-2026-40915 Cilium: Namespaced HTTPRoutes can redirect traffic to other namespaces CVSS 3.1HIGH 8.9
Sources
- CVE-2025-30162 · CVE Program
- CVE-2025-30162 · NVD
- FIRST EPSS
- GHSA-24qp-4xx8-3jvj · GitHub Advisory Database · CC BY 4.0
- CVE-2025-30162 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences