{"cve":"CVE-2001-1476","nvd":{"published":"2001-01-18T05:00:00.000","modified":"2026-06-16T21:56:21.023","status":"Modified","description":"SSH before 2.0, with RC4 encryption and the \"disallow NULL passwords\" option enabled, makes it easier for remote attackers to guess portions of user passwords by replaying user sessions with certain modifications, which trigger different messages depending on whether the guess is correct or not.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://www.kb.cert.org/vuls/id/565052","https://exchange.xforce.ibmcloud.com/vulnerabilities/6490","http://www.kb.cert.org/vuls/id/565052","https://exchange.xforce.ibmcloud.com/vulnerabilities/6490"],"products":["ssh:ssh"],"source":"nvd","synced_at":"2026-10-19T19:33:02.361923049+00:00"},"epss":{"cve":"CVE-2001-1476","score":0.01007,"percentile":0.63034,"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."]}