{"id":"CVE-2006-1652","aliases":["EUVD-2006-1653","GHSA-m87x-468w-hp6j"],"status":"published","title":"Multiple buffer overflows in (a) UltraVNC (aka Ultr@VNC) 1.0.1 and earlier and (b) tabbed_viewer...","description":"Multiple buffer overflows in (a) UltraVNC (aka Ultr@VNC) 1.0.1 and earlier and (b) tabbed_viewer 1.29 (1) allow user-assisted remote attackers to execute arbitrary code via a malicious server that sends a long string to a client that connects on TCP port 5900, which triggers an overflow in Log::ReallyPrint; and (2) allow remote attackers to cause a denial of service (server crash) via a long HTTP GET request to TCP port 5800, which triggers an overflow in VNCLog::ReallyPrint.","severity":{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.68036,"percentile":0.9933,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-119"],"published":"2006-04-06T10:00:00Z","modified":"2026-06-16T22:23:22Z","exploits":[{"source":"exploitdb","id":"EDB-16490","title":"UltraVNC 1.0.1 - Client Buffer Overflow (Metasploit)","type":"remote","platform":"windows","date":"2010-04-30","verified":true,"url":"https://www.exploit-db.com/exploits/16490"},{"source":"exploitdb","id":"EDB-27568","title":"UltraVNC 1.0.1 - Multiple Remote Error Logging Buffer Overflow Vulnerabilities (1)","type":"remote","platform":"windows","date":"2006-04-04","verified":true,"url":"https://www.exploit-db.com/exploits/27568"},{"source":"exploitdb","id":"EDB-27569","title":"UltraVNC 1.0.1 - Multiple Remote Error Logging Buffer Overflow Vulnerabilities (2)","type":"remote","platform":"windows","date":"2006-04-04","verified":true,"url":"https://www.exploit-db.com/exploits/27569"},{"source":"metasploit","id":"exploit/windows/vnc/ultravnc_client","title":"UltraVNC 1.0.1 Client Buffer Overflow","type":"exploit","platform":"Windows","date":"2006-04-04","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/windows/vnc/ultravnc_client"}],"products":[{"vendor":"ultravnc","product":"tabbed_viewer"},{"vendor":"ultravnc","product":"vnc_viewer"}],"references":[{"url":"https://www.exploit-db.com/exploits/1642","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/25648","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://www.exploit-db.com/exploits/1643","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/25650","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://secunia.com/advisories/19513","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://www.securityfocus.com/archive/1/430711/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/430287/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2006/1240","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Vendor Advisory"]},{"url":"http://securityreason.com/securityalert/674","tags":["third-party-advisory","x_refsource_SREASON","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/429930/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://lists.grok.org.uk/pipermail/full-disclosure/2006-April/044901.html","tags":["mailing-list","x_refsource_FULLDISC","x_transferred"]},{"url":"http://www.securityfocus.com/bid/17378","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2006-1652"},{"url":"https://github.com/advisories/GHSA-m87x-468w-hp6j"}],"sources":{"cve":[{"id":"CVE-2006-1652","description":"Multiple buffer overflows in (a) UltraVNC (aka Ultr@VNC) 1.0.1 and earlier and (b) tabbed_viewer 1.29 (1) allow user-assisted remote attackers to execute arbitrary code via a malicious server that sends a long string to a client that connects on TCP port 5900, which triggers an overflow in Log::ReallyPrint; and (2) allow remote attackers to cause a denial of service (server crash) via a long HTTP GET request to TCP port 5800, which triggers an overflow in VNCLog::ReallyPrint.","status":"published","published":"2006-04-06T10:00:00Z","modified":"2024-08-07T17:19:48.989Z","updated_at":"2026-11-02T14:33:52.224925Z"}],"euvd":[{"id":"EUVD-2006-1653","description":"Multiple buffer overflows in (a) UltraVNC (aka Ultr@VNC) 1.0.1 and earlier and (b) tabbed_viewer 1.29 (1) allow user-assisted remote attackers to execute arbitrary code via a malicious server that sends a long string to a client that connects on TCP port 5900, which triggers an overflow in Log::ReallyPrint; and (2) allow remote attackers to cause a denial of service (server crash) via a long HTTP GET request to TCP port 5800, which triggers an overflow in VNCLog::ReallyPrint.","status":"published","published":"2006-04-06T10:00:00Z","modified":"2024-08-07T17:19:48Z","updated_at":"2026-11-03T01:16:04.552077Z"}],"ghsa":[{"id":"GHSA-m87x-468w-hp6j","title":"Multiple buffer overflows in (a) UltraVNC (aka Ultr@VNC) 1.0.1 and earlier and (b) tabbed_viewer...","description":"Multiple buffer overflows in (a) UltraVNC (aka Ultr@VNC) 1.0.1 and earlier and (b) tabbed_viewer 1.29 (1) allow user-assisted remote attackers to execute arbitrary code via a malicious server that sends a long string to a client that connects on TCP port 5900, which triggers an overflow in Log::ReallyPrint; and (2) allow remote attackers to cause a denial of service (server crash) via a long HTTP GET request to TCP port 5800, which triggers an overflow in VNCLog::ReallyPrint.","status":"published","published":"2022-05-01T06:51:35Z","modified":"2023-01-31T05:00:54Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:47:57.136378Z"}],"nvd":[{"id":"CVE-2006-1652","description":"Multiple buffer overflows in (a) UltraVNC (aka Ultr@VNC) 1.0.1 and earlier and (b) tabbed_viewer 1.29 (1) allow user-assisted remote attackers to execute arbitrary code via a malicious server that sends a long string to a client that connects on TCP port 5900, which triggers an overflow in Log::ReallyPrint; and (2) allow remote attackers to cause a denial of service (server crash) via a long HTTP GET request to TCP port 5800, which triggers an overflow in VNCLog::ReallyPrint.","status":"published","published":"2006-04-06T10:04:00Z","modified":"2026-06-16T22:23:22.527Z","cvss":[{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:01:01.776256Z"}]}}