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CVE-2025-30162— East-west traffic not subject to egress policy enforcement for requests via Gateway API load balancers

Quick assessment

Affected
cilium cilium
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cilium是Cilium开源的一个开源软件。用于提供和透明地保护应用程序工作负载（如应用程序容器或进程）之间的网络连接和负载平衡。 Cilium v1.15.0至v1.15.14版本、v1.16.0至v1.16.7版本和v1.17.0至v1.17.1版本存在安全漏洞，该漏洞源于通过Gateway API负载均衡器的请求不受出口策略强制的流量。

CVSS 3.2 · Low EPSS 0.22% · P11

Possible ATT&CK Techniques 1 AI

T1040 · Network Sniffing
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I. Basic Information for CVE-2025-30162

Vulnerability Information
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Vulnerability Title
East-west traffic not subject to egress policy enforcement for requests via Gateway API load balancers
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Cilium 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cilium是Cilium开源的一个开源软件。用于提供和透明地保护应用程序工作负载（如应用程序容器或进程）之间的网络连接和负载平衡。 Cilium v1.15.0至v1.15.14版本、v1.16.0至v1.16.7版本和v1.17.0至v1.17.1版本存在安全漏洞，该漏洞源于通过Gateway API负载均衡器的请求不受出口策略强制的流量。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
cilium cilium >= 1.16.0, < 1.16.8 -

II. Public POCs for CVE-2025-30162

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III. Intelligence Information for CVE-2025-30162

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Patches & Fixes for CVE-2025-30162 (1)

Vendor Advisories for CVE-2025-30162 (1)

Other References for CVE-2025-30162 (1)

IV. Related Vulnerabilities

Same product: cilium
Same vendor: cilium
Same weakness: CWE-863

V. Comments for CVE-2025-30162

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