FreeRDP before 3.31.0 contains a denial-of-service vulnerability in the URBDRC control-transfer request path that fails to validate OutputBufferSize before forwarding to the libusb backend. A malicious RDP server can send a control-transfer request with OutputBufferSize set to 65536, triggering a reachable assertion that terminates the client process.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade freerdpUpgrade libwinprUpgrade freerdp-server-debuginfoUpgrade freerdp-libs-debuginfoUpgrade freerdp-develUpgrade libwinpr-develUpgrade freerdp-serverUpgrade freerdp-debuginfoUpgrade libwinpr-debuginfoUpgrade freerdp-debugsourceUpgrade freerdp-libs | Sep 30, 2026 | Sep 15, 2026 |
| Redhat_linux | — | No solution exists | Sep 17, 2026 | Sep 15, 2026 |
| Ubuntu | — | Upgrade freerdp3 | Sep 22, 2026 | Sep 16, 2026 |
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