FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP client can trigger a heap-buffer-overflow write in FreeRDP's server-side clipboard (cliprdr) channel by sending a CB_CLIP_CAPS PDU with a too-small capabilitySetLength. This can crash the server process (remote DoS) and may be exploitable for code execution because it corrupts heap memory. This vulnerability is fixed in 3.26.0.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade freerdp-debuginfoUpgrade freerdpUpgrade freerdp-develUpgrade libwinpr-develUpgrade libwinprUpgrade freerdp-libs | Jun 23, 2026 | Jun 23, 2026 |
| Amazon_linux_2023 | — | Upgrade freerdp-libsUpgrade freerdp-libs-debuginfoUpgrade libwinpr-debuginfoUpgrade libwinprUpgrade freerdp-server-debuginfoUpgrade freerdp-serverUpgrade freerdp-debugsourceUpgrade libwinpr-develUpgrade freerdpUpgrade freerdp-develUpgrade freerdp-debuginfo | Jun 23, 2026 | May 29, 2026 |
| Redhat_linux | — | No solution existsUpgrade freerdp-libsUpgrade freerdp-debuginfoUpgrade freerdp-develUpgrade libwinpr-develUpgrade freerdp-libs-debuginfoUpgrade freerdp-debugsourceUpgrade freerdpUpgrade freerdp-serverUpgrade libwinpr-debuginfoUpgrade freerdp-server-debuginfoUpgrade libwinpr | Jul 9, 2026 | May 29, 2026 |
| Rocky_linux | — | Upgrade freerdp-debugsourceUpgrade libwinpr-debuginfoUpgrade freerdp-serverUpgrade libwinprUpgrade freerdp-debuginfoUpgrade freerdpUpgrade libwinpr-develUpgrade freerdp-libs-debuginfoUpgrade freerdp-libsUpgrade freerdp-develUpgrade freerdp-server-debuginfo | Jul 10, 2026 | Jul 8, 2026 |
| Ubuntu | — | Upgrade libfreerdp3-3Upgrade freerdp3-x11Upgrade freerdp-x11 | Jul 21, 2026 | Jul 20, 2026 |
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