{"id":"CVE-2023-40044","aliases":[],"url":"https://o3.security/vulnerability/CVE-2023-40044","summary":"In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote…","details":"In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.","published":"2023-09-27T15:18:57.307","modified":"2026-06-17T06:15:55.110","cvss":{"score":10,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},"epss":{"score":0.9015,"percentile":0.9979,"asOf":"2026-09-15"},"cisaKev":null,"exploitsKnown":5,"affectedPackages":[],"fix":null,"references":[{"type":"EXPLOIT","url":"http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html"},{"type":"ADVISORY","url":"https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044"},{"type":"ADVISORY","url":"https://censys.com/cve-2023-40044/"},{"type":"ADVISORY","url":"https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023"},{"type":"EXPLOIT","url":"https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044"},{"type":"WEB","url":"https://www.progress.com/ws_ftp"},{"type":"ADVISORY","url":"https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/"},{"type":"ADVISORY","url":"https://www.theregister.com/2023/10/02/ws_ftp_update/"},{"type":"EXPLOIT","url":"http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html"},{"type":"ADVISORY","url":"https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044"},{"type":"ADVISORY","url":"https://censys.com/cve-2023-40044/"},{"type":"ADVISORY","url":"https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023"},{"type":"EXPLOIT","url":"https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044"},{"type":"WEB","url":"https://www.progress.com/ws_ftp"},{"type":"ADVISORY","url":"https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/"},{"type":"ADVISORY","url":"https://www.theregister.com/2023/10/02/ws_ftp_update/"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-40044"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-06-17T06:15:55.110"}}