{"id":"CVE-2001-1422","aliases":["EUVD-2001-1402","GHSA-hf8p-xhgf-8g9v"],"status":"published","title":"WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which...","description":"WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02064,"percentile":0.81502,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2001-01-23T05:00:00Z","modified":"2026-06-16T21:56:14Z","products":[{"vendor":"att","product":"winvnc"}],"references":[{"url":"http://www.securityfocus.com/bid/2275","tags":["vdb-entry","x_refsource_BID","x_transferred","Vendor Advisory"]},{"url":"http://www.kb.cert.org/vuls/id/303080","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/5992","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www1.corest.com/common/showdoc.php?idxseccion=10\u0026idx=117","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2001-1422"},{"url":"https://github.com/advisories/GHSA-hf8p-xhgf-8g9v"}],"sources":{"cve":[{"id":"CVE-2001-1422","description":"WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.","status":"published","published":"2005-03-20T05:00:00Z","modified":"2024-08-08T04:58:09.599Z","updated_at":"2026-11-02T14:34:42.680977Z"}],"euvd":[{"id":"EUVD-2001-1402","description":"WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.","status":"published","published":"2005-03-20T05:00:00Z","modified":"2024-08-08T04:58:09Z","updated_at":"2026-11-03T00:56:27.761833Z"}],"ghsa":[{"id":"GHSA-hf8p-xhgf-8g9v","title":"WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which...","description":"WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.","status":"published","published":"2022-04-30T18:18:00Z","modified":"2023-01-30T05:05:40Z","updated_at":"2026-11-02T14:47:19.787947Z"}],"nvd":[{"id":"CVE-2001-1422","description":"WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.","status":"published","published":"2001-01-23T05:00:00Z","modified":"2026-06-16T21:56:14.617Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:39.593487Z"}]}}