CVE-2021-41159
freerdp2-shadow-x11: FreeRDP is a free implementation of the Remote Desktop Protocol (RDP),released under the Apache license
CVE-2021-41159 is fixed in 25 products on 1 platform, first by freerdp2-shadow-x11 2.2.0+dfsg1-0ubuntu0.18.04.2, released October 21, 2021. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.8
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0149
74th percentile
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP),released under the Apache license. All FreeRDP clients prior to version2.4.1 using gateway connections (`/gt:rpc`) fail to validate input data. Amalicious 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 updatethen use `/gt:http` rather than /gt:rdp connections if possible or use adirect connection without a gateway.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| freerdp · RHEL 8 | 2:2.2.0-7.el8_5 | RHSA-2021:4622 | Nov 11, 2021 |
| freerdp · almalinux 8 | 2:2.2.0-7.el8_5 | ALSA-2021:4622 | Nov 11, 2021 |
| freerdp · ol 8 | 2:2.2.0-7.el8_5 | ELSA-2021-4622 | Nov 18, 2021 |
| freerdp · rocky 8 | 2:2.2.0-7.el8_5 | RLSA-2021:4622 | Nov 11, 2021 |
| freerdp-devel · RHEL 8 | 2:2.2.0-7.el8_5 | RHSA-2021:4622 | Nov 11, 2021 |
| freerdp-devel · almalinux 8 | 2:2.2.0-7.el8_5 | ALSA-2021:4622 | Nov 11, 2021 |
| freerdp-devel · ol 8 | 2:2.2.0-7.el8_5 | ELSA-2021-4622 | Nov 18, 2021 |
| freerdp-libs · RHEL 8 | 2:2.2.0-7.el8_5 | RHSA-2021:4622 | Nov 11, 2021 |
| freerdp-libs · almalinux 8 | 2:2.2.0-7.el8_5 | ALSA-2021:4622 | Nov 11, 2021 |
| freerdp-libs · ol 8 | 2:2.2.0-7.el8_5 | ELSA-2021-4622 | Nov 18, 2021 |
| freerdp2-shadow-x11 · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | freerdp2-shadow-x11 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| freerdp2-shadow-x11 · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | freerdp2-shadow-x11 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| freerdp2-shadow-x11 · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | freerdp2-shadow-x11 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| freerdp2-shadow-x11 · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | freerdp2-shadow-x11 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| freerdp2-shadow-x11 · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | freerdp2-shadow-x11 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| freerdp2-wayland · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | freerdp2-wayland 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| freerdp2-wayland · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | freerdp2-wayland 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| freerdp2-wayland · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | freerdp2-wayland 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| freerdp2-wayland · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | freerdp2-wayland 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| freerdp2-wayland · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | freerdp2-wayland 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| freerdp2-x11 · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | freerdp2-x11 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| freerdp2-x11 · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | freerdp2-x11 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| freerdp2-x11 · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | freerdp2-x11 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| freerdp2-x11 · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | freerdp2-x11 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| freerdp2-x11 · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | freerdp2-x11 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libfreerdp-client2-2 · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | libfreerdp-client2-2 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| libfreerdp-client2-2 · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | libfreerdp-client2-2 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| libfreerdp-client2-2 · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-client2-2 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| libfreerdp-client2-2t64 · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-client2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libfreerdp-client2-2t64 · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-client2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libfreerdp-server2-2 · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | libfreerdp-server2-2 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| libfreerdp-server2-2 · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | libfreerdp-server2-2 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| libfreerdp-server2-2 · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-server2-2 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| libfreerdp-server2-2t64 · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-server2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libfreerdp-server2-2t64 · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-server2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libfreerdp-shadow-subsystem2-2 · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | libfreerdp-shadow-subsystem2-2 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| libfreerdp-shadow-subsystem2-2 · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | libfreerdp-shadow-subsystem2-2 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| libfreerdp-shadow-subsystem2-2 · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-shadow-subsystem2-2 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| libfreerdp-shadow-subsystem2-2t64 · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-shadow-subsystem2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libfreerdp-shadow-subsystem2-2t64 · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-shadow-subsystem2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libfreerdp-shadow2-2 · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | libfreerdp-shadow2-2 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| libfreerdp-shadow2-2 · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | libfreerdp-shadow2-2 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| libfreerdp-shadow2-2 · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-shadow2-2 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| libfreerdp-shadow2-2t64 · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-shadow2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libfreerdp-shadow2-2t64 · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp-shadow2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libfreerdp2-2 · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | libfreerdp2-2 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| libfreerdp2-2 · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | libfreerdp2-2 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| libfreerdp2-2 · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp2-2 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| libfreerdp2-2t64 · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libfreerdp2-2t64 · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | libfreerdp2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libuwac0-0 · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | libuwac0-0 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| libuwac0-0 · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | libuwac0-0 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| libuwac0-0 · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | libuwac0-0 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| libuwac0-0t64 · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | libuwac0-0t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libuwac0-0t64 · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | libuwac0-0t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libwinpr · RHEL 8 | 2:2.2.0-7.el8_5 | RHSA-2021:4622 | Nov 11, 2021 |
| libwinpr · almalinux 8 | 2:2.2.0-7.el8_5 | ALSA-2021:4622 | Nov 11, 2021 |
| libwinpr · ol 8 | 2:2.2.0-7.el8_5 | ELSA-2021-4622 | Nov 18, 2021 |
| libwinpr-devel · RHEL 8 | 2:2.2.0-7.el8_5 | RHSA-2021:4622 | Nov 11, 2021 |
| libwinpr-devel · almalinux 8 | 2:2.2.0-7.el8_5 | ALSA-2021:4622 | Nov 11, 2021 |
| libwinpr-devel · ol 8 | 2:2.2.0-7.el8_5 | ELSA-2021-4622 | Nov 18, 2021 |
| libwinpr-tools2-2 · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | libwinpr-tools2-2 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| libwinpr-tools2-2 · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | libwinpr-tools2-2 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| libwinpr-tools2-2 · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | libwinpr-tools2-2 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| libwinpr-tools2-2t64 · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | libwinpr-tools2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libwinpr-tools2-2t64 · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | libwinpr-tools2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libwinpr2-2 · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | libwinpr2-2 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| libwinpr2-2 · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | libwinpr2-2 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| libwinpr2-2 · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | libwinpr2-2 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| libwinpr2-2t64 · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | libwinpr2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| libwinpr2-2t64 · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | libwinpr2-2t64 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| winpr-utils · Ubuntu 18.04.6 LTS (bionic) | 2.2.0+dfsg1-0ubuntu0.18.04.2 | winpr-utils 2.2.0+dfsg1-0ubuntu0.18.04.2 | Oct 21, 2021 |
| winpr-utils · Ubuntu 20.04 LTS (focal) | 2.2.0+dfsg1-0ubuntu0.20.04.2 | winpr-utils 2.2.0+dfsg1-0ubuntu0.20.04.2 | Oct 21, 2021 |
| winpr-utils · Ubuntu 22.04.1 LTS (jammy) | 2.3.0+dfsg1-2ubuntu2 | winpr-utils 2.3.0+dfsg1-2ubuntu2 | Oct 21, 2021 |
| winpr-utils · Ubuntu 24.10 (oracular) | 2.3.0+dfsg1-2ubuntu2 | winpr-utils 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
| winpr-utils · Ubuntu 25.04 (plucky) | 2.3.0+dfsg1-2ubuntu2 | winpr-utils 2.3.0+dfsg1-2ubuntu2 | Jan 16, 2026 |
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