{"id":"CVE-2006-2450","url":"https://www.cyber-defence.io/tools/cve/CVE-2006-2450","generatedAt":"2026-10-27T18:33:51.009Z","title":"auth.c in LibVNCServer 0.7.1 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, a different issue…","description":"auth.c in LibVNCServer 0.7.1 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, a different issue than CVE-2006-2369.","published":"2006-07-18T15:40:00.000Z","lastModified":"2026-06-16T22:25:02.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":7.5,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P"},"cwe":[],"affected":["libvncserver/libvncserver"],"epss":{"score":0.04363,"percentile":0.91184,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (4.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=376824","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://libvncserver.cvs.sourceforge.net/libvncserver/libvncserver/libvncserver/auth.c?r1=1.11&r2=1.14&diff_format=u","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://seclists.org/fulldisclosure/2022/May/29","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/20940","tags":["Patch","Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/21179","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/21349","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/21393","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/21405","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/24525","source":"secalert@redhat.com"},{"url":"http://security.gentoo.org/glsa/glsa-200608-05.xml","source":"secalert@redhat.com"},{"url":"http://security.gentoo.org/glsa/glsa-200608-12.xml","source":"secalert@redhat.com"},{"url":"http://security.gentoo.org/glsa/glsa-200703-19.xml","source":"secalert@redhat.com"},{"url":"http://sourceforge.net/project/shownotes.php?release_id=431724&group_id=32584","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://www.novell.com/linux/security/advisories/2006_42_kernel.html","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/archive/1/442986/100/0/threaded","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/18977","source":"secalert@redhat.com"},{"url":"http://www.vupen.com/english/advisories/2006/2797","source":"secalert@redhat.com"},{"url":"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=376824","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://libvncserver.cvs.sourceforge.net/libvncserver/libvncserver/libvncserver/auth.c?r1=1.11&r2=1.14&diff_format=u","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2022/May/29","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/20940","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/21179","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/21349","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/21393","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/21405","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/24525","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://security.gentoo.org/glsa/glsa-200608-05.xml","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://security.gentoo.org/glsa/glsa-200608-12.xml","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://security.gentoo.org/glsa/glsa-200703-19.xml","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://sourceforge.net/project/shownotes.php?release_id=431724&group_id=32584","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.novell.com/linux/security/advisories/2006_42_kernel.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/442986/100/0/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/18977","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2006/2797","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2006-2450","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}