CVE-2021-41160: Fedoraproject Fedora

High severity, CVSS 8.8. EPSS: 1.7% chance of exploitation in the next 30 days.

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions a malicious server might trigger out of bound writes in a connected client. Connections using GDI or SurfaceCommands to send graphics updates to the client might send `0` width/height or out of bound rectangles to trigger out of bound writes. With `0` width or heigth the memory allocation will be `0` but the missing bounds checks allow writing to the pointer at this (not allocated) region. This issue has been patched in FreeRDP 2.4.1.

Affected products

• Fedoraproject Fedora: version 33 only; version 34 only; version 35 only
• Freerdp Freerdp: before 2.4.1 (fixed in 2.4.1)

Published 2021-10-21. Last modified 2026-06-17.