CVE-2026-23948
FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2()
- State
- Published
- Severity
- 6.9 Medium
- Published
- Feb 9, 2026
- Updated
- Feb 10, 2026
- Reserved
- Jan 19, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | GitHub_M |
Weaknesses
- CWE-476 NULL Pointer Dereference
Affected Products
| Product | Versions |
|---|---|
FreeRDPFreeRDP |
|
References
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