{"api_version":"1","generated_at":"2026-04-17T03:17:10+00:00","cve":"CVE-2023-40044","urls":{"html":"https://cve.report/CVE-2023-40044","api":"https://cve.report/api/cve/CVE-2023-40044.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-40044","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-40044"},"summary":{"title":"Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability","description":"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.  ","state":"PUBLIC","assigner":"security@progress.com","published_at":"2023-09-27 15:18:00","updated_at":"2023-10-13 01:22:00"},"problem_types":["CWE-502"],"metrics":[],"references":[{"url":"https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044","name":"https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044","refsource":"MISC","tags":[],"title":"CVE-2023-40044 | AttackerKB","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/","name":"https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/","refsource":"MISC","tags":[],"title":"Critical Vulnerabilities in WS_FTP Server | Rapid7 Blog","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023","name":"https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023","refsource":"MISC","tags":[],"title":"Progress Customer Community","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html","name":"http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html","refsource":"MISC","tags":[],"title":"Progress Software WS_FTP Unauthenticated Remote Code Execution ≈ Packet Storm","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.progress.com/ws_ftp","name":"https://www.progress.com/ws_ftp","refsource":"MISC","tags":[],"title":"WS_FTP - Secure FTP Server and Client Software","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.theregister.com/2023/10/02/ws_ftp_update/","name":"https://www.theregister.com/2023/10/02/ws_ftp_update/","refsource":"MISC","tags":[],"title":"Mass exploitation attempts against WS_FTP have begun • The Register","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://censys.com/cve-2023-40044/","name":"https://censys.com/cve-2023-40044/","refsource":"MISC","tags":[],"title":"CVE-2023-40044: A Look at the Critical Ad Hoc Transfer Module Vulnerability in WS_FTP - Censys","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044","name":"https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044","refsource":"MISC","tags":[],"title":"RCE in Progress WS_FTP Ad Hoc via IIS HTTP Modules (CVE-2023-40044)","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-40044","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40044","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"40044","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"progress","cpe5":"ws_ftp_server","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":{"cve_year":"2023","cve_id":"40044","cve":"CVE-2023-40044","vendorProject":"Progress","product":"WS_FTP Server","vulnerabilityName":"Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability","dateAdded":"2023-10-05","shortDescription":"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.","requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","dueDate":"2023-10-26","knownRansomwareCampaignUse":"Known","notes":"https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023; https://nvd.nist.gov/vuln/detail/CVE-2023-40044","cwes":"CWE-502","catalogVersion":"2026.04.16","updated_at":"2026-04-16 13:54:08"},"epss":{"cve_year":"2023","cve_id":"40044","cve":"CVE-2023-40044","epss":"0.944360000","percentile":"0.999860000","score_date":"2026-04-16","updated_at":"2026-04-17 00:09:26"},"legacy_qids":[{"cve":"CVE-2023-40044","qid":"150742","title":"WS_FTP Server Multiple Critical Vulnerabilities - (September 2023)"},{"cve":"CVE-2023-40044","qid":"27395","title":"Progress WS_FTP Server Multiple Vulnerabilities"}]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-40044","ASSIGNER":"security@progress.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"\nIn 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.  \n\n"}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-502 Deserialization of Untrusted Data","cweId":"CWE-502"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"Progress Software Corporation","product":{"product_data":[{"product_name":"WS_FTP Server","version":{"version_data":[{"version_value":"not down converted","x_cve_json_5_version_data":{"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"}}]}}]}}]}},"references":{"reference_data":[{"url":"https://www.progress.com/ws_ftp","refsource":"MISC","name":"https://www.progress.com/ws_ftp"},{"url":"https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023","refsource":"MISC","name":"https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023"},{"url":"https://www.theregister.com/2023/10/02/ws_ftp_update/","refsource":"MISC","name":"https://www.theregister.com/2023/10/02/ws_ftp_update/"},{"url":"https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/","refsource":"MISC","name":"https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/"},{"url":"https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044","refsource":"MISC","name":"https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044"},{"url":"https://censys.com/cve-2023-40044/","refsource":"MISC","name":"https://censys.com/cve-2023-40044/"},{"url":"https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044","refsource":"MISC","name":"https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044"},{"url":"http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html","refsource":"MISC","name":"http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html"}]},"generator":{"engine":"Vulnogram 0.1.0-dev"},"source":{"discovery":"UNKNOWN"},"credits":[{"lang":"en","value":"Shubham Shah - Assetnote"},{"lang":"en","value":"Sean Yeoh - Assetnote"}],"impact":{"cvss":[{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}]}},"nvd":{"publishedDate":"2023-09-27 15:18:00","lastModifiedDate":"2023-10-13 01:22:00","problem_types":["CWE-502"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:progress:ws_ftp_server:*:*:*:*:*:*:*:*","versionEndExcluding":"8.7.4","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:progress:ws_ftp_server:*:*:*:*:*:*:*:*","versionStartIncluding":"8.8","versionEndExcluding":"8.8.2","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}