{"cve":"CVE-2005-2643","nvd":{"published":"2005-08-23T04:00:00.000","modified":"2026-06-16T22:15:23.620","status":"Modified","description":"Tor 0.1.0.13 and earlier, and experimental versions 0.1.1.4-alpha and earlier, does not reject certain weak keys when using ephemeral Diffie-Hellman (DH) handshakes, which allows malicious Tor servers to obtain the keys that a client uses for other systems in the circuit.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://archives.seul.org/or/announce/Aug-2005/msg00002.html","http://marc.info/?l=bugtraq&m=112448002732443&w=2","http://secunia.com/advisories/16424","http://securitytracker.com/id?1014739","http://archives.seul.org/or/announce/Aug-2005/msg00002.html"],"products":["tor:tor"],"source":"nvd","synced_at":"2026-10-19T19:39:29.870204089+00:00"},"epss":{"cve":"CVE-2005-2643","score":0.01247,"percentile":0.69344,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}