{"id":"CVE-2025-32793","aliases":["BIT-cilium-2025-32793","BIT-cilium-operator-2025-32793","BIT-hubble-relay-2025-32793","GHSA-5vxx-c285-pcq4","GO-2025-3635"],"url":"https://o3.security/vulnerability/CVE-2025-32793","summary":"Cilium packets from terminating endpoints may not be encrypted in Wireguard-enabled clusters","details":"### Impact\n\nWhen using [Wireguard transparent encryption](https://docs.cilium.io/en/stable/security/network/encryption-wireguard/#encryption-wg) in a Cilium cluster, packets that originate from a terminating endpoint can leave the source node without encryption due to a race condition in how traffic is processed by Cilium.\n\n### Patches\n\nThis issue has been patched in https://github.com/cilium/cilium/pull/38592.\n\nThis issue affects:\n\n- Cilium v1.15 between v1.15.0 and v1.15.15 inclusive\n- Cilium v1.16 between v1.16.0 and v1.16.8 inclusive\n- Cilium v1.17 between v1.17.0 and v1.17.2 inclusive\n\nThis issue is fixed in:\n\n- Cilium v1.15.16\n- Cilium v1.16.9\n- Cilium v1.17.3\n\n### Workarounds\n\nThere is no workaround to this issue.\n\n### Acknowledgements\n\nThe Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to @gandro  and @pippolo84 for reporting this issue and to @julianwiedmann for the patch.\n\n### For more information\n\nIf you think you have found a vulnerability affecting Cilium, we strongly encourage you to report it to our security mailing list at [security@cilium.io](mailto:security@cilium.io). This is a private mailing list for the Cilium security team, and your report will be treated as top priority.","published":"2025-04-21T15:34:14.315Z","modified":"2026-08-12T03:51:47.236783583Z","cvss":{"score":4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/cilium/cilium","fixedVersion":"1.15.16"},{"ecosystem":"Go","name":"github.com/cilium/cilium","fixedVersion":"1.16.9"},{"ecosystem":"Go","name":"github.com/cilium/cilium","fixedVersion":"1.17.3"}],"fix":{"url":"https://github.com/cilium/cilium/pull/38592","label":"cilium/cilium#38592"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/32xxx/CVE-2025-32793.json"},{"type":"ADVISORY","url":"https://github.com/cilium/cilium/security/advisories/GHSA-5vxx-c285-pcq4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-32793"},{"type":"FIX","url":"https://github.com/cilium/cilium/pull/38592"},{"type":"WEB","url":"https://github.com/cilium/cilium/commit/e8543eef05126e9ba8a845dc74e96f4e30f6dba9"},{"type":"PACKAGE","url":"https://github.com/cilium/cilium"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:47.236783583Z"}}