{"cve":"CVE-2024-47825","nvd":{"published":"2024-10-21T19:15:03.500","modified":"2026-06-17T07:57:49.363","status":"Analyzed","description":"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Starting in version 1.14.0 and prior to versions 1.14.16 and 1.15.10, a policy rule denying a prefix that is broader than `/32` may be ignored if there is a policy rule referencing a more narrow prefix (`CIDRSet` or `toFQDN`) and this narrower policy rule specifies either `enableDefaultDeny: false` or `- toEntities: all`. Note that a rule specifying `toEntities: world` or `toEntities: 0.0.0.0/0` is insufficient, it must be to entity `all`.This issue has been patched in Cilium v1.14.16 and v1.15.10. As this issue only affects policies using `enableDefaultDeny: false` or that set `toEntities` to `all`, some workarounds are available. For users with policies using `enableDefaultDeny: false`, remove this configuration option and explicitly define any allow rules required. For users with egress policies that explicitly specify `toEntities: all`, use `toEntities: world`.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","score":8.7},"cwes":["CWE-276"],"references":["https://github.com/cilium/cilium/security/advisories/GHSA-3wwx-63fv-pfq6"],"products":["cilium:cilium"],"source":"nvd","synced_at":"2026-10-19T21:56:33.105311382+00:00"},"epss":{"cve":"CVE-2024-47825","score":0.00397,"percentile":0.33896,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-3wwx-63fv-pfq6","url":"https://osv.dev/vulnerability/GHSA-3wwx-63fv-pfq6","summary":"Cilium's CIDR deny policies may not take effect when a more narrow CIDR allow is present","modified":"2026-09-10T03:50:19.136694045Z","packages":[{"ecosystem":"Go","name":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","ranges":[">=1.15.0 <1.15.10"],"fixed":["1.15.10"]},{"ecosystem":"Go","name":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","ranges":[">=1.14.0 <1.14.16"],"fixed":["1.14.16"]}]},{"id":"GO-2024-3208","url":"https://osv.dev/vulnerability/GO-2024-3208","summary":"Cilium's CIDR deny policies may not take effect when a more narrow CIDR allow is present in github.com/cilium/cilium","modified":"2026-02-04T02:59:31.711511Z","packages":[{"ecosystem":"Go","name":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","ranges":[">=1.14.0 <1.14.16",">=1.15.0 <1.15.10"],"fixed":["1.14.16","1.15.10"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}