CVE-2026-109241

3.1Low

Published 12 Oct 2026 · NVD status: Undergoing Analysis · AI triage by gemini-3.8-flash

3.1Low

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: Required
Impact: Limited impact
Weakness: CWE-476

Impact

A malicious RDP server can crash your FreeRDP client by sending crafted, out-of-order video messages. An attacker needs a user to connect to their malicious or compromised RDP server first.

Root cause

The client video redirection channel clears and nullifies presentation->geometry upon receiving a Geometry CLEAR message, but subsequent VideoData messages dereference that pointer without checking if it is null.

Affected systems

FreeRDP versions prior to 3.32.0

CVSS v3.1 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

Fix & remediation

Upgrade FreeRDP to version 3.32.0 or later. If upgrading immediately is not possible, do not connect to untrusted RDP endpoints.

shell

$ sudo apt-get update && sudo apt-get install --only-upgrade freerdp2-x11

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD description

FreeRDP before 3.32.0 contains a NULL pointer dereference vulnerability in the client video redirection channel that allows malicious servers to crash clients by sending out-of-order messages. Attackers can send a Geometry CLEAR message that nulls presentation->geometry, then send VideoData that dereferences it, causing client denial of service.

References

Source: nvd.nist.gov/vuln/detail/CVE-2026-109241