{"id":"CVE-2026-90862","title":"Web Transfer Module Multi-Factor Authentication Bypass in Progress WS_FTP Server","summary":"Improper authentication in the Web Transfer Module of Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow an attacker with a user’s password to access certain files associated with that account …","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-287","CWE-308"],"vendor":"Progress Software","product":"WS_FTP Server","affected":["ws_ftp_server < 2024.0.7","ws_ftp_server < 2025.0.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-30T17:13:52.462395Z"},"published":"2026-10-29","updated":"2026-10-30","sourceUpdated":"2026-10-30T17:14:03.885Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90862","references":[{"url":"https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view"}],"tags":["cve.org"],"epss":0.00222,"epssPercentile":0.12886,"ingestedAt":"2026-11-05T16:24:31.146Z","slug":"CVE-2026-90862","body":"## Overview\n\nImproper authentication in the Web Transfer Module of Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow an attacker with a user’s password to access certain files associated with that account without satisfying multi-factor authentication requirements.\n\n## Affected\n\n- `ws_ftp_server < 2024.0.7`\n- `ws_ftp_server < 2025.0.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nRestrict Web Transfer Module access to trusted networks and users, and disable Web Transfer functionality if it is not required. Contact Progress Software Technical Support for guidance on available mitigations.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}