CVE-2026-23883

freerdp: FreeRDP: Arbitrary code execution and denial of service via malicious server

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Severity

Important

Red Hat Product Security

7.6

CVSS 3.1

Review impact separately from score.

Published · January 20, 2026

Updated · June 30, 2026

Description

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A malicious server can exploit a use-after-free vulnerability by enticing a client to connect to it. This can lead to a client-side crash, resulting in a Denial of Service (DoS), and potentially allow for arbitrary code execution due to heap corruption.

Statement

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.

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

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

CWE-416 · Use After Free