FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0,`freerdp_bitmap_decompress_planar` does not validate `nSrcWidth`/`nSrcHeight` against `planar->maxWidth`/`maxHeight` before RLE decode. A malicious server can trigger a client‑side heap buffer overflow, 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 libwinpr-develUpgrade freerdpUpgrade freerdp-libsUpgrade freerdp-develUpgrade libwinpr | Feb 9, 2026 | Feb 5, 2026 |
| Alpine Linux | — | Upgrade freerdp | Feb 10, 2026 | Jan 19, 2026 |
| Amazon Linux Ami 2 | — | Upgrade freerdp-debuginfoUpgrade freerdp-develUpgrade freerdp-libsUpgrade libwinpr-develUpgrade libwinprUpgrade freerdp | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade freerdp-libsUpgrade freerdp-debugsourceUpgrade libwinpr-develUpgrade freerdpUpgrade libwinpr-debuginfoUpgrade freerdp-debuginfoUpgrade freerdp-libs-debuginfoUpgrade freerdp-develUpgrade freerdp-serverUpgrade libwinprUpgrade freerdp-server-debuginfo | Feb 10, 2026 | Jan 19, 2026 |
| Debian | — | Upgrade freerdp3 | Jul 23, 2026 | Jul 23, 2026 |
| Oracle_linux | — | Upgrade libwinpr-develUpgrade freerdpUpgrade freerdp-libsUpgrade freerdp-serverUpgrade freerdp-develUpgrade libwinpr | Feb 9, 2026 | Jan 19, 2026 |
| Redhat_linux | — | Upgrade freerdpUpgrade libwinpr-develUpgrade freerdp-debuginfoUpgrade freerdp-debugsourceUpgrade freerdp-server-debuginfoUpgrade freerdp-libsUpgrade freerdp-develUpgrade freerdp-libs-debuginfoNo solution existsUpgrade libwinprUpgrade freerdp-serverUpgrade libwinpr-debuginfo | Feb 10, 2026 | Jan 19, 2026 |
| Rocky_linux | — | Upgrade libwinpr-debuginfoUpgrade freerdp-libsUpgrade freerdp-debuginfoUpgrade freerdp-serverUpgrade freerdp-debugsourceUpgrade libwinprUpgrade libwinpr-develUpgrade freerdp-libs-debuginfoUpgrade freerdp-develUpgrade freerdpUpgrade freerdp-server-debuginfo | Feb 9, 2026 | Feb 6, 2026 |
| Suse | — | Upgrade libfreerdp3-3Upgrade freerdp2Upgrade freerdp-waylandUpgrade winpr-develUpgrade freerdp-proxyUpgrade freerdp2-develUpgrade libwinpr2-2Upgrade freerdp-develUpgrade freerdp-serverUpgrade libfreerdp2-2Upgrade freerdp2-serverUpgrade uwac0-0-develUpgrade freerdp2-proxyUpgrade librdtk0-0Upgrade freerdp-sdlUpgrade freerdp-proxy-pluginsUpgrade libwinpr3-3Upgrade winpr2-develUpgrade libuwac0-0Upgrade libfreerdp-server-proxy3-3Upgrade freerdp | Feb 2, 2026 | Jan 30, 2026 |
| Ubuntu | — | Upgrade libfreerdp3-3Upgrade libfreerdp2-2Upgrade libfreerdp2-2t64 (Ubuntu Pro)Upgrade libfreerdp2-2 (Ubuntu Pro) | Feb 4, 2026 | Jan 19, 2026 |
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