{"id":"CVE-2025-30403","aliases":["EUVD-2025-21179","GHSA-j73w-7xx9-cq3x"],"status":"published","title":"A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during...","description":"A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during a QUIC session. This issue affects mvfst versions prior to v2025.07.07.00.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.0033,"percentile":0.26466,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2025-07-11T18:26:51Z","modified":"2026-11-04T10:45:51Z","products":[{"vendor":"facebook","product":"mvfst"}],"references":[{"url":"https://www.facebook.com/security/advisories/cve-2025-30403","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/facebook/mvfst/commit/65b297332191de6e867c4a3139a233fc84c0e7e0","tags":["x_refsource_CONFIRM","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-30403","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-j73w-7xx9-cq3x"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/30xxx/CVE-2025-30403.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-30403","description":"A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during a QUIC session. This issue affects mvfst versions prior to v2025.07.07.00.","status":"published","published":"2025-07-11T18:26:51.212Z","modified":"2025-07-11T19:23:37.185Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","level":"high","assessor":"adp"}],"updated_at":"2026-11-02T14:32:35.418416Z"}],"euvd":[{"id":"EUVD-2025-21179","description":"A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during a QUIC session. This issue affects mvfst versions prior to v2025.07.07.00.","status":"published","published":"2025-07-11T18:26:51Z","modified":"2025-07-11T19:23:37Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:32:09.102762Z"}],"ghsa":[{"id":"GHSA-j73w-7xx9-cq3x","title":"A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during...","description":"A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during a QUIC session. This issue affects mvfst versions prior to v2025.07.07.00.","status":"published","published":"2025-07-11T21:31:04Z","modified":"2025-07-11T21:31:11Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:02:59.952815Z"}],"nvd":[{"id":"CVE-2025-30403","description":"A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during a QUIC session. This issue affects mvfst versions prior to v2025.07.07.00.","status":"published","published":"2025-07-11T19:15:23.327Z","modified":"2026-06-17T09:08:39.71Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","level":"high","assessor":"secondary"}],"updated_at":"2026-11-02T14:11:18.285862Z"}],"osv":[{"id":"CVE-2025-30403","description":"A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during a QUIC session. This issue affects mvfst versions prior to v2025.07.07.00.","status":"published","published":"2025-07-11T18:26:51.212Z","modified":"2026-11-11T13:22:48.445155212Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-11T03:22:28.447808Z"}]}}