Unrated severityNVD Advisory· Published Feb 9, 2026· Updated Feb 10, 2026
FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2()
CVE-2026-23948
Description
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.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- github.com/FreeRDP/FreeRDP/commit/4d44e3c097656a8b9ec696353647b0888ca45860mitrex_refsource_MISC
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-6f3c-qvqq-2px5mitrex_refsource_CONFIRM
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