# CVE-2026-65960: Tetragon: Unauthenticated Tetragon gRPC admin API accessible from hostNetwork pods

Status: published. Published: 2026-11-06. Updated: 2026-11-06.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- cilium / tetragon: < 1.7.0 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 8.8 (high); CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-306

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/cilium/tetragon/security/advisories/GHSA-6qqg-3qf7-p3v5 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/cilium/tetragon/pull/4882 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/cilium/tetragon/commit/8e89933d3526f37c04f7523013ff32f8b1c6f62a (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/cilium/tetragon/commit/fe46101770b960ebbf39fe9749bb20d49cf178b2 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/cilium/tetragon/releases/tag/v1.7.0 (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-65960; retrieved 2026-11-06; source updated 2026-11-06

Revision: b51cea0666eae4d76e3fdf557484c57168ad0aeb1c219749e69cb6ec9e33d9a9

Canonical: https://y2.dev/cve/CVE-2026-65960

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