CVE-2026-110830

A flaw was found in FreeRDP. A malicious Remote Desktop Protocol (RDP) server can trigger a Denial of Service (DoS) by sending repeated serial device creation requests when serial port redirection is enabled. Because FreeRDP fails to release previous communication handles before allocating new ones, the client application exhausts available file descriptors and terminates unexpectedly.

This vulnerability is rated Moderate for Red Hat Enterprise Linux because the impact is confined to client-side denial of service and requires an explicit, non-default feature configuration. FreeRDP does not enable serial device redirection by default, meaning an attacker-controlled RDP server can only trigger descriptor exhaustion if the client session specifically opted into serial forwarding. Additionally, the flaw affects only availability without impacting system confidentiality or data integrity.

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.

Limit FreeRDP process resources with ulimit/cgroup controls to contain memory exhaustion. Restrict clients/servers to trusted peers.