CVE-2026-64624

FreeRDP before 3.28.0 treats lines beginning with forward slash in RDP files as raw command-line options, exposing the entire CLI parser surface to untrusted files. Attackers can craft malicious RDP files with /rdp2tcp, /cert:ignore, or /drive options to execute arbitrary commands, bypass certificate validation, or expose local filesystems without user interaction.

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rq8f-9xjh-pr3m
• https://www.vulncheck.com/advisories/freerdp-rdp-file-parser-remote-code-execution-via-cli-options