CVE-2026-25959
freerdp3: FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-25959 is fixed in 27 products on 1 platform, first by freerdp3-proxy 3.16.0+dfsg-2ubuntu0.3, released February 25, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
Urgent
CVSS
9.8
critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0065
51st percentile
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_cliprdr_provide_data_` passes freed `pDstData` to `XChangeProperty` because the cliprdr channel thread calls `xf_cliprdr_server_format_data_response` which converts and uses the clipboard data without holding any lock, while the X11 event thread concurrently calls `xf_cliprdr_clear_cached_data` → `HashTable_Clear` which frees the same data via `xf_cached_data_free`, triggering a heap use after free. Version 3.23.0 fixes the issue.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| freerdp · amzn 2023 | 2:3.6.3-1.amzn2023.0.7 | ALAS2023-2026-1512 | Mar 30, 2026 |
| freerdp-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.7 | ALAS2023-2026-1512 | Mar 30, 2026 |
| freerdp-debugsource · amzn 2023 | 2:3.6.3-1.amzn2023.0.7 | ALAS2023-2026-1512 | Mar 30, 2026 |
| freerdp-devel · amzn 2023 | 2:3.6.3-1.amzn2023.0.7 | ALAS2023-2026-1512 | Mar 30, 2026 |
| freerdp-libs · amzn 2023 | 2:3.6.3-1.amzn2023.0.7 | ALAS2023-2026-1512 | Mar 30, 2026 |
| freerdp-libs-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.7 | ALAS2023-2026-1512 | Mar 30, 2026 |
| freerdp-server · amzn 2023 | 2:3.6.3-1.amzn2023.0.7 | ALAS2023-2026-1512 | Mar 30, 2026 |
| freerdp-server-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.7 | ALAS2023-2026-1512 | Mar 30, 2026 |
| freerdp3 · Debian 13.5 (trixie) | 3.15.0+dfsg-2.1+deb13u1 | DEBIAN-CVE-2026-25959 | Feb 25, 2026 |
| freerdp3 · Debian 14 | 3.23.0+dfsg-1 | DEBIAN-CVE-2026-25959 | Feb 25, 2026 |
| freerdp3-proxy · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-proxy 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| freerdp3-proxy-modules · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-proxy-modules 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| freerdp3-sdl · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-sdl 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| freerdp3-shadow-x11 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | freerdp3-shadow-x11 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| freerdp3-shadow-x11 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-shadow-x11 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| freerdp3-wayland · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | freerdp3-wayland 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| freerdp3-wayland · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-wayland 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| freerdp3-x11 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | freerdp3-x11 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| freerdp3-x11 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-x11 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp-client3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libfreerdp-client3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libfreerdp-client3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp-client3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp-server-proxy3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp-server-proxy3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp-server3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libfreerdp-server3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libfreerdp-server3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp-server3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libfreerdp-shadow-subsystem3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp-shadow-subsystem3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libfreerdp-shadow3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp-shadow3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libfreerdp3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libfreerdp3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libwinpr · amzn 2023 | 2:3.6.3-1.amzn2023.0.7 | ALAS2023-2026-1512 | Mar 30, 2026 |
| libwinpr-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.7 | ALAS2023-2026-1512 | Mar 30, 2026 |
| libwinpr-devel · amzn 2023 | 2:3.6.3-1.amzn2023.0.7 | ALAS2023-2026-1512 | Mar 30, 2026 |
| libwinpr-tools3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libwinpr-tools3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libwinpr-tools3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libwinpr-tools3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libwinpr3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libwinpr3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libwinpr3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libwinpr3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| winpr3-utils · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | winpr3-utils 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| winpr3-utils · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | winpr3-utils 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
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