CVE-2026-55648

Root cause: In libfreerdp/codec/color.c, freerdp_image_copy_from_icon_data computes nWidth * nHeight * FreeRDPGetBytesPerPixel(format) in 32-bit arithmetic, which wraps for large dimensions (e.g., 32768×32768 at 32 bpp), bypassing the source bounds check before freerdp_image_copy_no_overlap reads...

CVE-2026-55648 FreeRDP: Integer Overflow in `freerdp_image_copy_from_icon_data` Bypasses Bounds Check

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, freerdpimagecopyfromicondata in libfreerdp/codec/color.c calculates nWidth multiplied by nHeight multiplied by FreeRDPGetBytesPerPixelformat in 32-bit arithmetic. A malicious RDP server can send a RAIL TSICONINFO...