{"cve":"CVE-2022-2576","nvd":{"published":"2022-07-29T14:15:08.177","modified":"2026-06-17T04:42:08.760","status":"Modified","description":"In Eclipse Californium version 2.0.0 to 2.7.2 and 3.0.0-3.5.0 a DTLS resumption handshake falls back to a DTLS full handshake on a parameter mismatch without using a HelloVerifyRequest. Especially, if used with certificate based cipher suites, that results in message amplification (DDoS other peers) and high CPU load (DoS own peer). The misbehavior occurs only with DTLS_VERIFY_PEERS_ON_RESUMPTION_THRESHOLD values larger than 0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-408"],"references":["https://bugs.eclipse.org/580018","https://bugs.eclipse.org/580018"],"products":["eclipse:californium"],"source":"nvd","synced_at":"2026-10-19T21:34:18.502168378+00:00"},"epss":{"cve":"CVE-2022-2576","score":0.00606,"percentile":0.48987,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qq3j-44gw-cf6r","url":"https://osv.dev/vulnerability/GHSA-qq3j-44gw-cf6r","summary":"Eclipse Californium denial of service (DoS) via Datagram Transport Layer Security (DTLS) handshake on parameter mismatch","modified":"2023-11-08T04:08:47.900072Z","packages":[{"ecosystem":"Maven","name":"org.eclipse.californium:californium-core","purl":"pkg:maven/org.eclipse.californium/californium-core","ranges":[">=2.0.0 <2.7.3"],"fixed":["2.7.3"]},{"ecosystem":"Maven","name":"org.eclipse.californium:californium-core","purl":"pkg:maven/org.eclipse.californium/californium-core","ranges":[">=3.0.0 <3.6.0"],"fixed":["3.6.0"]}]}],"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."]}