CVE-2026-91947
freerdp3: FreeRDP server versions before 3.31.0 contain a use-after-free vulnerability in the DRDYNVC parser that dereferences...
CVE-2026-91947 is fixed in 34 products on 1 platform, first by ALAS2023-2026-2142, released September 14, 2026. 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
0.0037
31st percentile
FreeRDP server versions before 3.31.0 contain a use-after-free vulnerability in the DRDYNVC parser that dereferences a channel pointer after releasing the synchronization lock. Authenticated clients can race AUDIN channel closure messages against DRDYNVC data parsing to trigger heap-use-after-free when accessing freed channel objects.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| freerdp · RHEL 10 | 3.10.3-12.el10_2.14 | RHSA-2026:75570 | Oct 5, 2026 |
| freerdp · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| freerdp · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| freerdp · rocky 10 | 2:3.10.3-12.el10_2.14 | RLSA-2026:75570 | Oct 6, 2026 |
| freerdp-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-debugsource · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-devel · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| freerdp-devel · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-devel · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| freerdp-libs · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| freerdp-libs · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-libs · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| freerdp-libs-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-proxy · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-proxy 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp-proxy-modules · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-proxy-modules 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp-sdl · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-sdl 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp-server · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| freerdp-server · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-server · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| freerdp-server-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-shadow-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-shadow-x11 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp-wayland · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-wayland 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-x11 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3 · Debian 14 | 3.31.0+dfsg-1 | DEBIAN-CVE-2026-91947 | Sep 17, 2026 |
| freerdp3-proxy · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-proxy 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3-proxy-modules · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-proxy-modules 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3-sdl · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-sdl 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3-shadow-x11 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | freerdp3-shadow-x11 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| freerdp3-shadow-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-shadow-x11 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3-wayland · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | freerdp3-wayland 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| freerdp3-wayland · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-wayland 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3-x11 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | freerdp3-x11 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| freerdp3-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-x11 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp-client3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-client3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libfreerdp-client3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-client3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp-server-proxy3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-server-proxy3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp-server3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-server3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libfreerdp-server3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-server3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-shadow-subsystem3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-shadow-subsystem3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-shadow3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-shadow3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libfreerdp3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libfreerdp3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libwinpr · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| libwinpr · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| libwinpr · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| libwinpr-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| libwinpr-devel · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| libwinpr-devel · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| libwinpr-devel · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| libwinpr-tools3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libwinpr-tools3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libwinpr-tools3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libwinpr-tools3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libwinpr3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libwinpr3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libwinpr3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libwinpr3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| winpr-utils · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | winpr-utils 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| winpr3-utils · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | winpr3-utils 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| winpr3-utils · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | winpr3-utils 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.