CVE-2026-7831 UltraVNC viewer off-by-one stack overflow in ServerInit desktop name parsing

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-2026-5707

Unsanitized input in an OS command in the virtual desktop session name handling in AWS Research and Engineering Studio RES version 2025.03 through 2025.12.01 might allow a remote authenticated actor to execute arbitrary commands as root on the virtual desktop host via a crafted session name. To...

CVE-2026-5707

Unsanitized input in an OS command in the virtual desktop session name handling in AWS Research and Engineering Studio RES version 2025.03 through 2025.12.01 might allow a remote authenticated actor to execute arbitrary commands as root on the virtual desktop host via a crafted session name. To...

vnc-title NSE Script

Tries to log into a VNC server and get its desktop name. Uses credentials discovered by vnc-brute, or None authentication types. If realvnc-auth-bypass was run and returned VULNERABLE, this script will use that vulnerability to bypass authentication. See also: vnc-brute.nse realvnc-auth-bypass.ns...