CVE-2026-23883

What it is

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, `xf_Pointer_New` frees `cursorPixels` on failure, then `pointer_free` calls `xf_Pointer_Free` and frees it again, triggering ASan UAF. A malicious server can trigger a client‑side use after free, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-01-19 18:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-07-15 02:18 UTC Last updatedMost recent change to the record

Details

Published

2026-01-19 18:16 UTC

Last modified

2026-07-15 02:18 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-416 · Use after free

Record status

Modified

Affected

• Freerdp < 3.21.0

Attack profile CVSS 4.0 · 7.7

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High