CVE-2026-25955: Freerdp

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_AppUpdateWindowFromSurface` reuses a cached `XImage` whose `data` pointer references a freed RDPGFX surface buffer, because `gdi_DeleteSurface` frees `surface->data` without invalidating the `appWindow->image` that aliases it. Version 3.23.0 fixes the issue.

Affected products

• Freerdp Freerdp: before 3.23.0 (fixed in 3.23.0)

Published 2026-02-25. Last modified 2026-06-17.