CVE-2026-22854

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. This vulnerability is fixed in 3.20.1.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

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-47vj-g3c3-3rmf	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, ocurre un desbordamiento de búfer de pila en la lectura de unidad cuando se utiliza una longitud de lectura controlada por el servidor para leer datos de archivo en un búfer de flujo de salida IRP sin un límite superior estricto, permitiendo que una lectura de tamaño excesivo sobrescriba la memoria de la pila. Esta vulnerabilidad está corregida en la versión 3.20.1.

20 Jan 2026, 18:38

Type	Values Removed	Values Added
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-47vj-g3c3-3rmf -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-47vj-g3c3-3rmf - Exploit, Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.8
First Time		Freerdp Freerdp freerdp

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-2026-22854

Mitre link : CVE-2026-22854

CVE.ORG link : CVE-2026-22854

JSON object : View

Products Affected

freerdp

freerdp

CWE

CWE-122

Heap-based Buffer Overflow

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