{"id":"CVE-2025-64715","revision":null,"records":[{"revision":"ec6e6b5bb7804c5c8e99b204e6b8e123","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-64715","aliases":[],"title":"Cilium with misconfigured toGroups in policies can lead to unrestricted egress traffic","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.16.17, 1.17.10, and 1.18.4, CiliumNetworkPolicys which use egress.toGroups.aws.securityGroupsIds to reference AWS security group IDs that do not exist or are not attached to any network interface may unintentionally allow broader outbound access than intended by the policy authors. In such cases, the toCIDRset section of the derived policy is not generated, which means outbound traffic may be permitted to more destinations than originally intended. This issue has been patched in versions 1.16.17, 1.17.10, and 1.18.4. There are no workarounds for this issue.","state":0,"publishedAt":"2025-11-29T00:11:26.807+00:00","modifiedAt":"2025-12-01T19:15:21.156+00:00","affected":[{"ecosystem":"Vendor product","name":"cilium","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"cilium\",\n                    \"product\": \"cilium\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.16.17\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 1.17.0, < 1.17.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 1.18.0, < 1.18.4\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":4,"severity":"MEDIUM"}],"references":["https://github.com/cilium/cilium/security/advisories/GHSA-38pp-6gcp-rqvm","https://github.com/cilium/cilium/commit/a385856b59c8289cc7273fa3a3062bbf0ef96c97","https://github.com/cilium/cilium/releases/tag/v1.16.17","https://github.com/cilium/cilium/releases/tag/v1.17.10","https://github.com/cilium/cilium/releases/tag/v1.18.4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-64715","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-64715","identifiers":["CVE-2025-64715"]},"retained":false,"historicalAffected":[]},{"revision":"21246a92993948cca70e1d82e58f9fd5","observedAt":"2026-11-07T03:29:36.746+00:00","statement":{"source":"euvd","id":"EUVD-2025-199886","aliases":["CVE-2025-64715","GHSA-38pp-6gcp-rqvm"],"title":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. 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There are no workarounds for this issue.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":4,"severity":null}],"references":["https://github.com/cilium/cilium/security/advisories/GHSA-38pp-6gcp-rqvm","https://github.com/cilium/cilium/commit/a385856b59c8289cc7273fa3a3062bbf0ef96c97","https://github.com/cilium/cilium/releases/tag/v1.16.17","https://github.com/cilium/cilium/releases/tag/v1.17.10","https://github.com/cilium/cilium/releases/tag/v1.18.4"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-199886","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Nov 29, 2025, 12:11:26 AM","dateUpdated":"Dec 1, 2025, 7:15:21 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2025-199886","identifiers":["EUVD-2025-199886","CVE-2025-64715","GHSA-38pp-6gcp-rqvm"]},"retained":false,"historicalAffected":[]},{"revision":"5bfc65af90eb472cb914d799c56257f5","observedAt":"2026-10-25T03:17:29.935+00:00","statement":{"source":"nvd","id":"CVE-2025-64715","aliases":[],"title":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.16.17, 1.17.10, and 1.18.4, CiliumNetworkPolicys which use egress.toGroups.aws.securityGroupsIds to reference AWS security group …","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.16.17, 1.17.10, and 1.18.4, CiliumNetworkPolicys which use egress.toGroups.aws.securityGroupsIds to reference AWS security group IDs that do not exist or are not attached to any network interface may unintentionally allow broader outbound access than intended by the policy authors. In such cases, the toCIDRset section of the derived policy is not generated, which means outbound traffic may be permitted to more destinations than originally intended. This issue has been patched in versions 1.16.17, 1.17.10, and 1.18.4. There are no workarounds for this issue.","state":0,"publishedAt":"2025-11-29T01:16:01.427+00:00","modifiedAt":"2026-10-19T13:10:00.11+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":4,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.5,"severity":"MEDIUM"}],"references":["https://github.com/cilium/cilium/commit/a385856b59c8289cc7273fa3a3062bbf0ef96c97","https://github.com/cilium/cilium/releases/tag/v1.16.17","https://github.com/cilium/cilium/releases/tag/v1.17.10","https://github.com/cilium/cilium/releases/tag/v1.18.4","https://github.com/cilium/cilium/security/advisories/GHSA-38pp-6gcp-rqvm"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-64715","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-284","NVD-CWE-noinfo"],"productCriteria":["cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2025-11-29T01:16:01.427","lastModified":"2026-10-19T13:10:00.110"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2025-64715","identifiers":["CVE-2025-64715"]},"retained":false,"historicalAffected":[]},{"revision":"bfe6aeb889db49208ce6ba716ce69c91","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-38pp-6gcp-rqvm","aliases":["BIT-cilium-2025-64715","BIT-cilium-operator-2025-64715","BIT-hubble-relay-2025-64715","CVE-2025-64715","GO-2025-4167"],"title":"Cilium with misconfigured toGroups in policies can lead to unrestricted egress traffic","description":"### Impact\n\n`CiliumNetworkPolicy`s which use `egress.toGroups.aws.securityGroupsIds` to reference AWS security group IDs that do not exist or are not attached to any network interface may unintentionally allow broader outbound access than intended by the policy authors. In such cases, the toCIDRset section of the derived policy is not generated, which means outbound traffic may be permitted to more destinations than originally intended.\n\n### Patches\n\nThis issue has been patched in:\n\n* Cilium v1.18.4\n* Cilium v1.17.10\n* Cilium v1.16.17\n\n### This issue affects:\n\n- Cilium v1.18 between v1.18.0 and v1.18.3 inclusive\n- Cilium v1.17 between v1.17.0 and v1.17.9 inclusive\n- Cilium v1.16.16 and below\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 @SeanEmac   for reporting this issue and to @fristonio 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.","state":0,"publishedAt":"2025-12-01T18:59:54+00:00","modifiedAt":"2026-09-10T03:50:31.2321805+00:00","affected":[{"ecosystem":"Go","name":"github.com/cilium/cilium","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"1.18.0"},{"kind":"fixed","version":"1.18.4"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/cilium/cilium","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"1.17.0"},{"kind":"fixed","version":"1.17.10"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/cilium/cilium","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.16.17"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"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","https://github.com/cilium/cilium","https://github.com/cilium/cilium/releases/tag/v1.16.17","https://github.com/cilium/cilium/releases/tag/v1.17.10","https://github.com/cilium/cilium/releases/tag/v1.18.4"],"sourceUrl":"https://github.com/advisories/GHSA-38pp-6gcp-rqvm","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-38pp-6gcp-rqvm","identifiers":["GHSA-38pp-6gcp-rqvm","BIT-cilium-2025-64715","BIT-cilium-operator-2025-64715","BIT-hubble-relay-2025-64715","CVE-2025-64715","GO-2025-4167"]},"retained":false,"historicalAffected":[]},{"revision":"1a8af91152d84ba3b23b6c788c3a5840","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2025-4167","aliases":["BIT-cilium-2025-64715","BIT-cilium-operator-2025-64715","BIT-hubble-relay-2025-64715","CVE-2025-64715","GHSA-38pp-6gcp-rqvm"],"title":"Cilium with misconfigured toGroups in policies can lead to unrestricted egress traffic in Ciliumgithub.com/cilium/cilium","description":"Cilium with misconfigured toGroups in policies can lead to unrestricted egress traffic in Ciliumgithub.com/cilium/cilium","state":0,"publishedAt":"2025-12-15T20:33:49+00:00","modifiedAt":"2026-02-04T03:22:00.049612+00:00","affected":[{"ecosystem":"Go","name":"github.com/cilium/cilium","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.16.17"},{"kind":"introduced","version":"1.17.0"},{"kind":"fixed","version":"1.17.10"},{"kind":"introduced","version":"1.18.0"},{"kind":"fixed","version":"1.18.4"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"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","https://github.com/cilium/cilium/releases/tag/v1.16.17","https://github.com/cilium/cilium/releases/tag/v1.17.10","https://github.com/cilium/cilium/releases/tag/v1.18.4"],"sourceUrl":"https://osv.dev/vulnerability/GO-2025-4167","license":"OSV · upstream source license applies","key":"osv:GO-2025-4167","identifiers":["GO-2025-4167","BIT-cilium-2025-64715","BIT-cilium-operator-2025-64715","BIT-hubble-relay-2025-64715","CVE-2025-64715","GHSA-38pp-6gcp-rqvm"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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