CVE-1999-0526

An X server's access control is disabled e.g. through an "xhost +" command and allows anyone to connect to the server...

ALSA-2025:9304 Important: xorg-x11-server-Xwayland security update

Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Out-of-Bounds Read in X Rendering Extension Animated Cursors CVE-2025-49175 xorg-x11-server-Xwayland: xorg-x11-server: tigervnc: Integer Overflow in Big Requests...

X servers may have insecure default configuration of xhosts

Overview Some X server products client software for connecting to a host with Xwindows capabilities may be configured insecurely by default. Description In X windows terminology, the X server is the software which provides "services" to the client, while the X client is the software that makes...