{"id":"CVE-2026-23948","summary":"FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2()","details":"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.","aliases":["GHSA-6f3c-qvqq-2px5"],"modified":"2026-04-17T13:29:29.823476219Z","published":"2026-02-09T18:12:00.737Z","related":["ALSA-2026:6340","ALSA-2026:6799","ALSA-2026:6918","openSUSE-SU-2026:10132-1","openSUSE-SU-2026:20339-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23948.json","cwe_ids":["CWE-476"],"cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23948.json"},{"type":"ADVISORY","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-6f3c-qvqq-2px5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23948"},{"type":"FIX","url":"https://github.com/FreeRDP/FreeRDP/commit/4d44e3c097656a8b9ec696353647b0888ca45860"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/freerdp/freerdp","events":[{"introduced":"0"},{"fixed":"e3ef4c71138f76516299cb3637d2d0c59b2a3737"}]}],"versions":["1.0-beta1","1.0-beta2","1.0-beta4","1.0-beta5","1.0.0","1.0.1","1.1.0-beta+2013071101","1.1.0-beta1","1.1.0-beta1+android2","1.1.0-beta1+android3","1.1.0-beta1+android4","1.1.0-beta1+android5","1.1.0-beta1+ios1","1.1.0-beta1+ios2","1.1.0-beta1+ios3","1.1.0-beta1+ios4","1.2.0-beta1+android7","1.2.0-beta1+android9","2.0.0","2.0.0-beta1+android10","2.0.0-beta1+android11","2.0.0-rc0","2.0.0-rc1","2.0.0-rc2","2.0.0-rc3","2.0.0-rc4","3.0.0","3.0.0-beta1","3.0.0-beta2","3.0.0-beta3","3.0.0-beta4","3.0.0-rc0","3.1.0","3.2.0","3.3.0","3.4.0","3.5.0","3.5.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23948.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"}]}