CVE-2026-22856
High
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a race in the serial channel IRP thread tracking allows a heap use‑after‑free when one thread removes an entry from serial->IrpThreads while another reads it. This vulnerability is fixed in 3.20.1.
SeverityHigh
CVSS8.1
Exploit probability—
ProductFreerdp
PublishedJan 14, 2026
First seenJan 14, 2026
Weakness typeCWE-362Race conditionCWE-416Use after free
How to fix
Update
- freerdp freerdp3.20.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| freerdp freerdp | v < 3.20.1 | 3.20.1 |
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