{"schema":"threatline.record/2","record":{"id":"CVE-2023-40044","aliases":[],"summary":"Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability","details":"Progress WS_FTP Server contains a deserialization of untrusted data vulnerability in the Ad Hoc Transfer module that allows an authenticated attacker to execute remote commands on the underlying operating system.","categories":["Unclassified"],"product":"WS_FTP Server","vendor":"Progress","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2023-40044","source_modified_at":"2025-10-21T23:05:36.645Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"WS_FTP Server","vendor":"Progress Software Corporation","versions":[{"lessThan":"8.8.2","status":"affected","version":"8.8.0","versionType":"semver"},{"lessThan":"8.7.4","status":"affected","version":"8.7.0","versionType":"semver"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2023-40044","source_modified_at":"2025-10-21T23:05:36.645Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"WS_FTP Server","ecosystem":null},"version":"8.8.2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2023-40044","source_modified_at":"2025-10-21T23:05:36.645Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"WS_FTP Server","ecosystem":null},"version":"8.7.4","basis":"first unaffected version stated in the CVE record"}],"cvss":10,"severity":"Critical","kev":{"listed":true,"date_added":"2023-10-05","due_date":"2023-10-26","required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","ransomware_campaign_use":"Known"},"epss":{"probability":0.90355,"percentile":0.99802,"score_date":"2026-10-23"},"published_at":"2023-09-27T14:48:08.190Z","modified_at":"2025-10-21T23:05:36.645Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2023-40044","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:05:36.645Z"},{"source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/ws_ftp_rce_cve_2023_40044.rb","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2023-09-27"},{"source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-40044.yaml","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":null},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2023-40044","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Metasploit","Nuclei","EPSS"],"references":[{"source":"CVE List","url":"https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023","tags":["vendor-advisory","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40044","source":"CISA KEV"},{"source":"CVE List","url":"https://www.progress.com/ws_ftp","tags":["product","x_transferred"]},{"source":"CVE List","url":"https://www.theregister.com/2023/10/02/ws_ftp_update/","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/","tags":["x_transferred"]},{"source":"CVE List","url":"https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044","tags":["x_transferred"]},{"source":"CVE List","url":"https://censys.com/cve-2023-40044/","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-40044","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"total","assessed_at":"2025-02-03T16:29:04.428335Z"},"exploits":[{"source":"Metasploit","kind":"Exploit module","name":"Progress Software WS_FTP Unauthenticated Remote Code Execution","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/ws_ftp_rce_cve_2023_40044.rb","date":"2023-09-27","added":"2026-04-22","check":true},{"source":"Nuclei","kind":"Scanner template","name":"WS_FTP Server - 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