CVE-2026-22856

8.1 HIGH
Published: January 14, 2026 Modified: January 20, 2026
View on NVD

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 useโ€‘afterโ€‘free when one thread removes an entry from serial->IrpThreads while another reads it. This vulnerability is fixed in 3.20.1.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
Source: security-advisories@github.com
Release Notes
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-w842-c386-fxhv
Source: security-advisories@github.com
Exploit Patch Vendor Advisory

2 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.1 / 10.0
EPSS (Exploit Probability)
0.1%
22th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

freerdp