CVE-2026-7831: Off-by-one Error

UltraVNC viewer through 1.8.2.2 contains an off-by-one stack buffer overflow in the RFB ServerInit message handler. In vncviewer/ClientConnection.cpp, when the server-supplied nameLength equals exactly 2024 the code declares a 2024-byte stack buffer dn2024 and calls ReadStringdn, 2024. ReadString...

CVE-2009-0388: Undefined Security Weakness

Multiple integer signedness errors in 1 UltraVNC 1.0.2 and 1.0.5 and 2 TightVnc 1.3.9 allow remote VNC servers to cause a denial of service heap corruption and application crash or possibly execute arbitrary code via a large length value in a message, related to the a...

CVE-2008-0610: Improper Restriction of Operations within the Bounds of a Memory Buffer

Stack-based buffer overflow in the ClientConnection::NegotiateProtocolVersion function in vncviewer/ClientConnection.cpp in vncviewer for UltraVNC 1.0.2 and 1.0.4 before 01252008, when in LISTENING mode or when using the DSM plugin, allows remote attackers to execute arbitrary code or cause a...