CVE-2026-110829

A flaw was found in FreeRDP. A malicious Remote Desktop Protocol (RDP) server can cause a Denial of Service (DoS) by sending a malformed audio channel (rdpsnd) fragment to a connecting client. Due to missing validation of packet flags, processing a terminating fragment on an uninitialized channel triggers a null pointer dereference, causing the client application to crash.

This flaw is rated Moderate because a malicious or compromised RDP server can crash the FreeRDP client when malformed rdpsnd audio channel fragments 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.

If audio redirection is unused, disable it. Restrict FreeRDP clients to trusted servers.