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FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, offscreen bitmap deletion leaves `gdi->drawing` pointing to freed memory, causing UAF when related update packets arrive. A malicious server can trigger a client‑side use after free, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libwinprUpgrade libwinpr-develUpgrade freerdp-libsUpgrade freerdpUpgrade freerdp-devel | Feb 9, 2026 | Feb 5, 2026 |
| Alpine Linux | — | Upgrade freerdp | Feb 10, 2026 | Jan 19, 2026 |
| Amazon Linux Ami 2 | — | Upgrade libwinprUpgrade freerdp-develUpgrade freerdp-libsUpgrade libwinpr-develUpgrade freerdpUpgrade freerdp-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade libwinpr-develUpgrade freerdp-server-debuginfoUpgrade freerdp-libs-debuginfoUpgrade freerdp-develUpgrade freerdpUpgrade freerdp-libsUpgrade freerdp-serverUpgrade libwinprUpgrade freerdp-debuginfoUpgrade freerdp-debugsourceUpgrade libwinpr-debuginfo | Feb 10, 2026 | Jan 19, 2026 |
| Debian | — | Upgrade freerdp3 | Jul 23, 2026 | Jul 23, 2026 |
| Oracle_linux | — | Upgrade freerdp-libsUpgrade libwinprUpgrade libwinpr-develUpgrade freerdpUpgrade freerdp-serverUpgrade freerdp-devel | Feb 9, 2026 | Jan 19, 2026 |
| Redhat_linux | — | Upgrade freerdp-libs-debuginfoUpgrade libwinpr-debuginfoNo solution existsUpgrade freerdp-libsUpgrade libwinprUpgrade freerdp-server-debuginfoUpgrade freerdp-develUpgrade freerdp-serverUpgrade freerdp-debugsourceUpgrade freerdp-debuginfoUpgrade libwinpr-develUpgrade freerdp | Feb 10, 2026 | Jan 19, 2026 |
| Rocky_linux | — | Upgrade freerdp-libsUpgrade freerdp-develUpgrade freerdp-debuginfoUpgrade libwinprUpgrade freerdp-libs-debuginfoUpgrade freerdp-serverUpgrade freerdpUpgrade libwinpr-develUpgrade libwinpr-debuginfoUpgrade freerdp-server-debuginfoUpgrade freerdp-debugsource | Feb 9, 2026 | Feb 6, 2026 |
| Suse | — | Upgrade freerdp-develUpgrade freerdp-serverUpgrade winpr-develUpgrade librdtk0-0Upgrade libfreerdp-server-proxy3-3Upgrade freerdp-proxy-pluginsUpgrade freerdp-sdlUpgrade libwinpr3-3Upgrade freerdp-proxyUpgrade freerdpUpgrade libfreerdp3-3 | Feb 2, 2026 | Jan 30, 2026 |
| Ubuntu | — | Upgrade libfreerdp3-3 | Mar 19, 2026 | Jan 19, 2026 |
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