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OpenAdvisories
High RLSA-2021:4622 2 CVEs

Important: freerdp security update

Published Nov 11, 2021 · Updated Feb 4, 2026

Ecosystem: Rocky Linux

Summary

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

* freerdp: improper client input validation for gateway connections allows to overwrite memory (CVE-2021-41159)

* freerdp: improper region checks in all clients allow out of bound write to memory (CVE-2021-41160)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 8 freerdp 2:2.2.0-7.el8_5

Vulnerabilities 2

  • Medium 5.8
    CVE-2021-41159

    Improper client input validation for FreeRDP gateway connections allows to overwrite memory

    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 memo…

    FreeRDP FreeRDP freerdp2 freerdp2 Debian Ubuntu Alpine
  • Medium 5.3
    CVE-2021-41160 Public exploit

    Improper region checks in FreeRDP allow out of bound write to memory

    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 graphic…

    FreeRDP FreeRDP freerdp2 freerdp2 Debian Ubuntu Alpine

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2016403
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2016412