$ cve CVE-2006-1652 JSON

CVE-2006-1652 EXPLOIT

9.0

HIGH · CVSS 2.0 · EPSS 68% (pctl 99)

Patch early

A public exploit exists.

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.

Scoring

CVSS	9.0 (HIGH, v2.0)
Vector	AV:N/AC:L/Au:S/C:C/I:C/A:C
EPSS	68.04% — more likely to be exploited than 99% of all CVEs
Weakness	CWE-119
On CISA KEV	no
Public exploit	yes
Published	2006-04-06
Last modified	2026-06-16

Affected (2)

Vendor	Product
ultravnc	tabbed viewer
ultravnc	vnc viewer

Public exploits

Source	Title	Date
exploit-db	UltraVNC 1.0.1 - Client Buffer Overflow (Metasploit)	2010-04-30
exploit-db	UltraVNC 1.0.1 - Multiple Remote Error Logging Buffer Overflow Vulnerabilities (1)	2006-04-04
exploit-db	UltraVNC 1.0.1 - Multiple Remote Error Logging Buffer Overflow Vulnerabilities (2)	2006-04-04

References

→ the Explorer · watch your stack · NVD