FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a race in the serial channel IRP thread tracking allows a heap use‑after‑free when one thread removes an entry from serial->IrpThreads while another reads it. This vulnerability is fixed in 3.20.1.
CVSS Details
- CVSS 4.0 Base Score: 6.8 (MEDIUM)
- CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
- CVSS 3.1 Base Score: 8.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade freerdp-develUpgrade freerdp-libsUpgrade libwinpr-develUpgrade freerdpUpgrade libwinpr | Apr 3, 2026 | Apr 1, 2026 |
| Alpine Linux | — | Upgrade freerdp | Feb 10, 2026 | Jan 14, 2026 |
| Amazon Linux Ami 2 | — | Upgrade freerdp-develUpgrade libwinpr-develUpgrade freerdpUpgrade libwinprUpgrade freerdp-libsUpgrade freerdp-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade freerdpUpgrade freerdp-server-debuginfoUpgrade freerdp-debugsourceUpgrade libwinpr-develUpgrade freerdp-debuginfoUpgrade libwinpr-debuginfoUpgrade freerdp-libsUpgrade freerdp-libs-debuginfoUpgrade freerdp-develUpgrade freerdp-serverUpgrade libwinpr | Feb 20, 2026 | Jan 14, 2026 |
| Debian | — | Upgrade freerdp3 | Jul 23, 2026 | Jul 23, 2026 |
| Oracle_linux | — | Upgrade libwinprUpgrade freerdpUpgrade libwinpr-develUpgrade freerdp-libsUpgrade freerdp-serverUpgrade freerdp-devel | Apr 2, 2026 | Jan 14, 2026 |
| Redhat_linux | — | Upgrade freerdp-debugsourceUpgrade libwinpr-develUpgrade freerdp-debuginfoUpgrade freerdpUpgrade freerdp-server-debuginfoUpgrade freerdp-libsUpgrade freerdp-libs-debuginfoNo solution existsUpgrade libwinprUpgrade libwinpr-debuginfoUpgrade freerdp-develUpgrade freerdp-server | Apr 2, 2026 | Jan 14, 2026 |
| Rocky_linux | — | Upgrade freerdpUpgrade libwinprUpgrade freerdp-server-debuginfoUpgrade libwinpr-develUpgrade freerdp-debuginfoUpgrade freerdp-debugsourceUpgrade libwinpr-debuginfoUpgrade freerdp-libsUpgrade freerdp-serverUpgrade freerdp-develUpgrade freerdp-libs-debuginfo | Apr 8, 2026 | Apr 7, 2026 |
| Suse | — | Upgrade uwac0-develUpgrade freerdp2Upgrade winpr2-develUpgrade libuwac0-0Upgrade uwac0-0-develUpgrade winpr-develUpgrade libwinpr3-3Upgrade freerdp-waylandUpgrade freerdp-serverUpgrade librdtk0-0Upgrade libfreerdp3-3Upgrade libfreerdp-server-proxy3-3Upgrade libwinpr2-2Upgrade freerdp2-serverUpgrade freerdp-proxy-pluginsUpgrade freerdpUpgrade freerdp2-proxyUpgrade freerdp-sdlUpgrade rdtk0-develUpgrade freerdp2-develUpgrade freerdp-develUpgrade freerdp-proxyUpgrade libfreerdp2-2 | Feb 2, 2026 | Jan 30, 2026 |
| Ubuntu | — | Upgrade libfreerdp3-3 | Mar 19, 2026 | Jan 14, 2026 |
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