CVE-2021-41160

5.3 MEDIUM
Published: October 21, 2021 Modified: November 03, 2025

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7c9r-6r2q-93qg
Source: security-advisories@github.com
Third Party Advisory
https://security.gentoo.org/glsa/202210-24
Source: security-advisories@github.com
Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7c9r-6r2q-93qg
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://security.gentoo.org/glsa/202210-24
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

13 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.1%
34th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

fedoraproject freerdp