CVE-2026-25954
freerdp: FreeRDP: Use-after-free vulnerability leading to denial of service
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · February 26, 2026
Updated · June 28, 2026
Description
A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP). A remote attacker could exploit a use-after-free vulnerability in the xf_rail_server_local_move_size function. This occurs because the xf_rail_get_window function returns an unprotected pointer, allowing a main thread to concurrently delete a window while another thread is still using its pointer. Successful exploitation of this flaw could lead to a denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 5.3CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-825 · Expired Pointer Dereference