CVE-2026-22859

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, the URBDRC client does not perform bounds checking on server‑supplied MSUSB_INTERFACE_DESCRIPTOR values and uses them as indices in libusb_udev_complete_msconfig_setup, causing an out‑of‑bounds read. This vulnerability is fixed in 3.20.1.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1	Release Notes
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-56f5-76qv-2r36	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*

History

17 Jun 2026, 10:20

Type	Values Removed	Values Added
Summary		(es) FreeRDP es una implementación gratuita del Protocolo de Escritorio Remoto. Antes de la versión 3.20.1, el cliente URBDRC no realiza comprobación de límites en los valores MSUSB_INTERFACE_DESCRIPTOR proporcionados por el servidor y los utiliza como índices en libusb_udev_complete_msconfig_setup, causando una lectura fuera de límites. Esta vulnerabilidad está corregida en la versión 3.20.1.

20 Jan 2026, 18:31

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.1
First Time		Freerdp Freerdp freerdp
CPE		cpe:2.3:a:freerdp:freerdp::::::::
References	~~() https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1 -~~	() https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1 - Release Notes
References	~~() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-56f5-76qv-2r36 -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-56f5-76qv-2r36 - Exploit, Vendor Advisory

14 Jan 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-14 18:16

Updated : 2026-06-17 10:20

NVD link : CVE-2026-22859

Mitre link : CVE-2026-22859

CVE.ORG link : CVE-2026-22859

JSON object : View

Products Affected

freerdp

freerdp

CWE

CWE-125

Out-of-bounds Read

CWE-129

Improper Validation of Array Index

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