{"id":"CVE-2006-2369","aliases":["EUVD-2006-2370","GHSA-p5jc-gpgq-6vfg"],"status":"published","title":"RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager,...","description":"RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as \"Type 1 - None\", which is accepted even if it is not offered by the server, as originally demonstrated using a long password.","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":"2026-11-08","score":0.92355,"percentile":0.99825,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-287"],"published":"2006-05-15T16:00:00Z","modified":"2026-06-16T22:24:52Z","exploits":[{"source":"exploitdb","id":"EDB-17719","title":"RealVNC - Authentication Bypass (Metasploit)","type":"remote","platform":"windows","date":"2011-08-26","verified":true,"url":"https://www.exploit-db.com/exploits/17719"},{"source":"exploitdb","id":"EDB-1791","title":"RealVNC 4.1.0 \u003c 4.1.1 - VNC Null Authentication Bypass","type":"remote","platform":"multiple","date":"2006-05-16","verified":true,"url":"https://www.exploit-db.com/exploits/1791"},{"source":"exploitdb","id":"EDB-1794","title":"RealVNC 4.1.0 \u003c 4.1.1 - VNC Null Authentication Bypass (Metasploit)","type":"remote","platform":"multiple","date":"2006-05-15","verified":true,"url":"https://www.exploit-db.com/exploits/1794"},{"source":"exploitdb","id":"EDB-36932","title":"RealVNC 4.1.0/4.1.1 - Authentication Bypass","type":"remote","platform":"windows","date":"2012-05-13","verified":true,"url":"https://www.exploit-db.com/exploits/36932"},{"source":"metasploit","id":"auxiliary/admin/vnc/realvnc_41_bypass","title":"RealVNC NULL Authentication Mode Bypass","type":"auxiliary","date":"2006-05-15","verified":true,"url":"https://www.rapid7.com/db/modules/auxiliary/admin/vnc/realvnc_41_bypass"},{"source":"metasploit","id":"auxiliary/scanner/vnc/vnc_none_auth","title":"VNC Authentication None Detection","type":"auxiliary","verified":true,"url":"https://www.rapid7.com/db/modules/auxiliary/scanner/vnc/vnc_none_auth"}],"products":[{"vendor":"vnc","product":"realvnc"}],"references":[{"url":"http://securityreason.com/securityalert/8355","tags":["third-party-advisory","x_refsource_SREASON","x_transferred","web"]},{"url":"http://www.vupen.com/english/advisories/2006/2492","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Vendor Advisory","advisory"]},{"url":"http://secunia.com/advisories/20107","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Patch","Vendor 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Advisory","advisory"]},{"url":"http://seclists.org/fulldisclosure/2022/May/29","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","web"]},{"url":"http://www.openwall.com/lists/oss-security/2024/08/02/8"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2006-2369"},{"url":"https://github.com/advisories/GHSA-p5jc-gpgq-6vfg"}],"sources":{"cve":[{"id":"CVE-2006-2369","description":"RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as \"Type 1 - None\", which is accepted even if it is not offered by the server, as originally demonstrated using a long password.","status":"published","published":"2006-05-15T16:00:00Z","modified":"2024-08-07T17:51:03.61Z","updated_at":"2026-11-02T14:33:49.265317Z"}],"euvd":[{"id":"EUVD-2006-2370","description":"RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as \"Type 1 - None\", which is accepted even if it is not offered by the server, as originally demonstrated using a long password.","status":"published","published":"2006-05-15T16:00:00Z","modified":"2024-08-07T17:51:03Z","updated_at":"2026-11-03T01:16:01.004094Z"}],"ghsa":[{"id":"GHSA-p5jc-gpgq-6vfg","title":"RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager,...","description":"RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as \"Type 1 - None\", which is accepted even if it is not offered by the server, as originally demonstrated using a long password.","status":"published","published":"2022-05-01T06:58:17Z","modified":"2025-04-03T04:33:32Z","cwes":["CWE-287"],"updated_at":"2026-11-02T15:00:45.528888Z"}],"nvd":[{"id":"CVE-2006-2369","description":"RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as \"Type 1 - None\", which is accepted even if it is not offered by the server, as originally demonstrated using a long password.","status":"published","published":"2006-05-15T16:06:00Z","modified":"2026-06-16T22:24:52.227Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:01:02.98271Z"}],"osv":[{"id":"CVE-2006-2369","description":"RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as \"Type 1 - None\", which is accepted even if it is not offered by the server, as originally demonstrated using a long password.","status":"withdrawn","published":"2006-05-15T16:06:00Z","modified":"2024-06-04T04:00:19Z","updated_at":"2026-11-02T15:43:56.581247Z"}]}}