CVE-2026-22857: Freerdp

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap use-after-free occurs in irp_thread_func because the IRP is freed by irp->Complete() and then accessed again on the error path. This vulnerability is fixed in 3.20.1.

Affected products

• Freerdp Freerdp: before 3.20.1 (fixed in 3.20.1)

Published 2026-01-14. Last modified 2026-06-17.