CVE-2026-26986
freerdp: FreeRDP: Denial of Service via double free vulnerability during disconnect
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. This double free vulnerability occurs during the cleanup process when a remote desktop session disconnects. Specifically, if a title allocation fails, a pointer to an application window is freed but not removed from a tracking table. Later, during disconnection, the same pointer is freed again, which can lead to a crash and result in 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:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-825 · Expired Pointer Dereference