CVE-2026-22855

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap out-of-bounds read occurs in the smartcard SetAttrib path when cbAttrLen does not match the actual NDR buffer length. 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-rwp3-g84r-6mx9	Vendor Advisory Exploit

Configurations

Configuration 1 (hide)

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

History

20 Jan 2026, 18:36

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-rwp3-g84r-6mx9 -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rwp3-g84r-6mx9 - Vendor Advisory, Exploit

14 Jan 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-14 18:16

Updated : 2026-01-20 18:36

NVD link : CVE-2026-22855

Mitre link : CVE-2026-22855

CVE.ORG link : CVE-2026-22855

JSON object : View

Products Affected

freerdp

freerdp

CWE

CWE-125

Out-of-bounds Read

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