{"id":"CVE-2026-90869","aliases":["EUVD-2026-113026","GHSA-47x4-grc2-rh4m"],"status":"published","title":"Pre-Authentication SSH Denial of Service via Malformed Public-Key Signature in Progress WS_FTP Server","description":"A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared SSH service in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00356,"percentile":0.29803,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125","CWE-20"],"published":"2026-10-29T15:54:48Z","modified":"2026-10-30T18:18:17Z","products":[{"vendor":"progress software","product":"ws_ftp server"},{"vendor":"progress software corporation","product":"ws_ftp server"}],"references":[{"url":"https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90869"},{"url":"https://github.com/advisories/GHSA-47x4-grc2-rh4m"}],"sources":{"cve":[{"id":"CVE-2026-90869","title":"Pre-Authentication SSH Denial of Service via Malformed Public-Key Signature in Progress WS_FTP Server","description":"A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared SSH service in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows.","status":"published","published":"2026-10-29T15:54:48.769Z","modified":"2026-10-30T17:14:35.864Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-125","CWE-20"],"updated_at":"2026-11-02T13:45:47.885058Z"}],"euvd":[{"id":"EUVD-2026-113026","description":"A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared SSH service in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows.","status":"published","published":"2026-10-29T15:54:48Z","modified":"2026-10-30T17:14:35Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:59:05.567782Z"}],"ghsa":[{"id":"GHSA-47x4-grc2-rh4m","title":"A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared...","description":"A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared SSH service in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows.","status":"published","published":"2026-10-29T18:31:07Z","modified":"2026-10-29T18:31:14Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:14:40.528345Z"}],"nvd":[{"id":"CVE-2026-90869","description":"A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared SSH service in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows.","status":"published","published":"2026-10-29T16:20:05.08Z","modified":"2026-10-30T18:18:17.587Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-20","CWE-125"],"updated_at":"2026-11-02T14:13:04.940026Z"}]}}