Is github.com/cilium/cilium affected by CVE-2025-64715?

Go github.com/cilium/cilium is affected in =1.17.0 =1.18.0 <1.18.4.

Is CVE-2025-64715 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

medium

CVE-2025-64715

Q: Is CVE-2025-64715 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

Go · github.com/cilium/cilium

Summary

Cilium with misconfigured toGroups in policies can lead to unrestricted egress traffic in Ciliumgithub.com/cilium/cilium

Severity: medium
EPSS: 0.2% (p5)
Also known as: GHSA-38pp-6gcp-rqvm, BIT-cilium-2025-64715, BIT-cilium-operator-2025-64715, BIT-hubble-relay-2025-64715, GO-2025-4167
Published: 2025-12-15

References

https://github.com/cilium/cilium/security/advisories/GHSA-38pp-6gcp-rqvm
https://nvd.nist.gov/vuln/detail/CVE-2025-64715
https://github.com/cilium/cilium/commit/a385856b59c8289cc7273fa3a3062bbf0ef96c97

Related advisories

CVE-2026-41520 — high · Go/github.com/cilium/cilium
CVE-2026-33726 — medium · Go/github.com/cilium/cilium
CVE-2026-26963 — medium · Go/github.com/cilium/cilium

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.