Detections
Analytics
CVE-2026-59691
high
Description
A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit pixels. This type mismatch causes an out-of-bounds heap write that can lead to denial of service (process crash) and potential memory corruption.
References
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5173
https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/100