CVE-2026-23948

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, a NULL pointer dereference vulnerability in rdp_write_logon_info_v2() allows a malicious RDP server to crash FreeRDP proxy by sending a specially crafted LogonInfoV2 PDU with cbDomain=0 or cbUserName=0. This vulnerability is fixed in 3.22.0.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FreeRDP/FreeRDP/commit/4d44e3c097656a8b9ec696353647b0888ca45860	Patch
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-6f3c-qvqq-2px5	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

10 Feb 2026, 15:09

Type	Values Removed	Values Added
CPE		cpe:2.3:a:freerdp:freerdp::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
First Time		Freerdp Freerdp freerdp
References	~~() https://github.com/FreeRDP/FreeRDP/commit/4d44e3c097656a8b9ec696353647b0888ca45860 -~~	() https://github.com/FreeRDP/FreeRDP/commit/4d44e3c097656a8b9ec696353647b0888ca45860 - Patch
References	~~() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-6f3c-qvqq-2px5 -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-6f3c-qvqq-2px5 - Patch, Vendor Advisory

09 Feb 2026, 19:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-09 19:15

Updated : 2026-02-10 15:09

NVD link : CVE-2026-23948

Mitre link : CVE-2026-23948

CVE.ORG link : CVE-2026-23948

JSON object : View

Products Affected

freerdp

freerdp

CWE

CWE-476

NULL Pointer Dereference

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