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CVE-2006-1652

9.0 · HIGH

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…

Published Apr 6, 2006ultravncCWE-119EPSS 68.04%

Overview

CVE-2006-1652 is a high-severity vulnerability affecting ultravnc tabbed_viewer. It was published on April 6, 2006 and has a CVSS 2.0 base score of 9.0 (HIGH).

This vulnerability has a CVSS 2.0 base score of 9.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from ultravnc. Update tabbed_viewer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Reflists.grok.org.uk/pipermail/full-disclosure/2006-April/044901.htmlRefsecunia.com/advisories/19513Refsecurityreason.com/securityalert/674Refwww.securityfocus.com/archive/1/429930/100/0/threadedRefwww.securityfocus.com/archive/1/430287/100/0/threadedRefwww.securityfocus.com/archive/1/430711/100/0/threadedRefwww.securityfocus.com/bid/17378Refwww.vupen.com/english/advisories/2006/1240Refexchange.xforce.ibmcloud.com/vulnerabilities/25648Refexchange.xforce.ibmcloud.com/vulnerabilities/25650

How CyberStrike helps

Frequently asked questions

What is CVE-2006-1652?

CVE-2006-1652 is a high-severity vulnerability affecting ultravnc tabbed_viewer. It was published on April 6, 2006 and has a CVSS 2.0 base score of 9.0 (HIGH).

How severe is CVE-2006-1652?

This vulnerability has a CVSS 2.0 base score of 9.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2006-1652?

Check the references section for vendor advisories and patches from ultravnc. Update tabbed_viewer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2006-1652?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2006-1652 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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