CVE-2026-23884

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A malicious server can exploit this vulnerability when a client connects to it. Specifically, offscreen bitmap deletion can lead to a use-after-free (UAF) condition, where the client attempts to use memory that has already been deallocated. This can cause a crash, resulting in a Denial of Service (DoS), and potentially lead to heap corruption with a risk of arbitrary code execution.

For this vulnerability to be exploited, a client must connect to a maliciously-configured server. Red Hat recommends that FreeRDP clients are only used to connect to trusted servers.

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.