VULNERABILITY INTELLIGENCE

CVE-2021-41159

CVSS score5.8 MEDIUM
EPSS probability1.49%
CISA KEVNot currently listed
Published2021-10-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. All FreeRDP clients prior to version 2.4.1 using gateway connections (`/gt:rpc`) fail to validate input data. A malicious gateway might allow client memory to be written out of bounds. This issue has been resolved in version 2.4.1. If you are unable to update then use `/gt:http` rather than /gt:rdp connections if possible or use a direct connection without a gateway.

Weakness classification

  • CWE-787: Out-of-bounds Write

Primary references