Cilium Tetragon up to 1.6.x gRPC API privileges management

Summaryinfo

A vulnerability, which was classified as very critical, has been found in Cilium Tetragon up to 1.6.x. Affected by this issue is some unknown functionality of the component gRPC API. The manipulation leads to privileges management. This vulnerability is referenced as CVE-2026-65960. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cilium Tetragon up to 1.6.x. It has been rated as very critical. This issue affects an unknown functionality of the component gRPC API. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Tetragon is an eBPF-based security observability and runtime enforcement project. Versions before 1.7.0 can use a Helm default that exposes the privileged Tetragon gRPC API through an unauthenticated TCP listener on localhost:54321. An attacker who can run or compromise same-node hostNetwork pods can reach the listener and invoke privileged methods without authentication. These methods can add, delete, or reconfigure tracing policies and change debug settings, potentially resulting in privilege escalation or container escape. Version 1.7.0 changes the default endpoint to a Unix-domain socket. Deployments that do not expose an unauthenticated TCP listener are not affected.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-65960 since 07/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. The exploitation requires an enhanced level of successful authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/06/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 1.7.0 eliminates this vulnerability.

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Productinfo

Vendor

• Cilium

Name

• Tetragon

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6

Website

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

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