CVE-2021-41160
freerdp2-shadow-x11: FreeRDP is a free implementation of the Remote Desktop Protocol (RDP),released under the Apache license
CVE-2021-41160 is fixed in 26 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
0.0166
76th percentile
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP),released under the Apache license. In affected versions a malicious servermight trigger out of bound writes in a connected client. Connections usingGDI 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 missingbounds checks allow writing to the pointer at this (not allocated) region.This issue has been patched in FreeRDP 2.4.1.
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 · Debian 11.6 (bullseye) | 2.3.0+dfsg1-2+deb11u2 | DLA-4053-1 | Feb 15, 2025 |
| 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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