CVE-2026-22854: 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-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. 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.