FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's func_get_ep_desc function that indexes interface arrays by position instead of protocol field InterfaceNumber. A malicious RDP server can send a crafted SELECT_CONFIGURATION message with permuted InterfaceNumber values to read past allocated heap memory and crash the client.
CVSS Details
- CVSS 4.0 Base Score: 7.1 (HIGH)
- CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade libwinpr-develUpgrade freerdp-debugsourceUpgrade freerdpUpgrade libwinpr-debuginfoUpgrade freerdp-server-debuginfoUpgrade freerdp-debuginfoUpgrade freerdp-libs-debuginfoUpgrade freerdp-develUpgrade freerdp-libsUpgrade freerdp-serverUpgrade libwinpr | 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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