CVE-2026-109943

A flaw was found in FreeRDP. A malicious Remote Desktop Protocol (RDP) server can trigger a Denial of Service (DoS) by causing a connecting client to crash. When asynchronous update processing is enabled, sending specially crafted polygon drawing orders can cause a double-free memory error during message handling, terminating the client connection.

This flaw is rated Moderate because a malicious or compromised RDP server can crash the FreeRDP client when async-update polygon order handling is used, causing a denial of service for the connecting user. Exploitation requires the user to initiate a connection (UI:R). Confidentiality and integrity are not impacted. Red Hat platform safeguards such as ASLR, NX, and FORTIFY_SOURCE do not remove the crash impact, so Availability remains High.

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.