{"id":"CVE-2025-24946","aliases":["EUVD-2025-4633","GHSA-m6hh-vp2v-rm5m"],"status":"published","title":"The hash table used to manage connections in picoquic before b80fd3f uses a weak hash function,...","description":"The hash table used to manage connections in picoquic before b80fd3f uses a weak hash function, allowing remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs).","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00548,"percentile":0.46168,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-407"],"published":"2025-02-20T00:00:00Z","modified":"2026-10-28T02:30:42Z","products":[{"vendor":"privateoctopus","product":"picoquic"}],"references":[{"url":"https://github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory","tags":["package"]},{"url":"https://github.com/private-octopus/picoquic/commit/b80fd3f5903279ae3e7714ee4109363d9ab4491a","tags":["fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-24946","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-m6hh-vp2v-rm5m"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24946.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-24946","description":"The hash table used to manage connections in picoquic before b80fd3f uses a weak hash function, allowing remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs).","status":"published","published":"2025-02-20T00:00:00Z","modified":"2025-02-20T17:26:27.66Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-407"],"updated_at":"2026-11-02T14:32:44.11109Z"}],"euvd":[{"id":"EUVD-2025-4633","description":"The hash table used to manage connections in picoquic before b80fd3f uses a weak hash function, allowing remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs).","status":"published","published":"2025-02-20T00:00:00Z","modified":"2025-02-20T17:26:27Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T20:53:26.353093Z"}],"ghsa":[{"id":"GHSA-m6hh-vp2v-rm5m","title":"The hash table used to manage connections in picoquic before b80fd3f uses a weak hash function,...","description":"The hash table used to manage connections in picoquic before b80fd3f uses a weak hash function, allowing remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs).","status":"published","published":"2025-02-20T03:32:03Z","modified":"2025-02-20T03:32:13Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-407"],"updated_at":"2026-11-02T14:59:59.716099Z"}],"nvd":[{"id":"CVE-2025-24946","description":"The hash table used to manage connections in picoquic before b80fd3f uses a weak hash function, allowing remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs).","status":"published","published":"2025-02-20T03:15:12.8Z","modified":"2026-06-17T08:59:52.137Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-407"],"updated_at":"2026-11-02T14:10:51.871789Z"}],"osv":[{"id":"CVE-2025-24946","description":"The hash table used to manage connections in picoquic before b80fd3f uses a weak hash function, allowing remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs).","status":"published","published":"2025-02-20T00:00:00Z","modified":"2026-10-28T02:30:42.092942995Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-407"],"updated_at":"2026-11-02T15:44:47.386092Z"}]}}