Cilium up to 1.17.13/1.18.7/1.19.1 Admin Endpoints admin.sock improper authentication

Summaryinfo

A vulnerability classified as very critical was found in Cilium up to 1.17.13/1.18.7/1.19.1. The impacted element is an unknown function of the file admin.sock of the component Admin Endpoints. The manipulation results in improper authentication. This vulnerability is identified as CVE-2026-49445. The attack is only possible with local access. There is not any exploit available.

Detailsinfo

A vulnerability classified as very critical has been found in Cilium up to 1.17.13/1.18.7/1.19.1. Affected is an unknown function of the file admin.sock of the component Admin Endpoints. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-49445 since 05/30/2026. The exploitability is told to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/15/2026).

Upgrading to version 1.17.14, 1.18.8 or 1.19.2 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Cilium

Version

• 1.17.0
• 1.17.1
• 1.17.2
• 1.17.3
• 1.17.4
• 1.17.5
• 1.17.6
• 1.17.7
• 1.17.8
• 1.17.9
• 1.17.10
• 1.17.11
• 1.17.12
• 1.17.13
• 1.18.0
• 1.18.1
• 1.18.2
• 1.18.3
• 1.18.4
• 1.18.5
• 1.18.6
• 1.18.7
• 1.19.0
• 1.19.1

Website

• Product: https://github.com/cilium/cilium/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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