{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90869", "assignerOrgId": "f9fea0b6-671e-4eea-8fde-31911902ae05", "state": "PUBLISHED", "assignerShortName": "ProgressSoftware", "dateReserved": "2026-09-14T06:09:55.848Z", "datePublished": "2026-10-29T15:54:48.769Z", "dateUpdated": "2026-10-29T15:54:48.769Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f9fea0b6-671e-4eea-8fde-31911902ae05", "shortName": "ProgressSoftware", "dateUpdated": "2026-10-29T15:54:48.769Z"}, "title": "Pre-Authentication SSH Denial of Service via Malformed Public-Key Signature in Progress WS_FTP Server", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-125", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}, {"lang": "en", "cweId": "CWE-20", "description": "CWE-20: Improper Input Validation", "type": "CWE"}]}], "impacts": [{"descriptions": [{"lang": "en", "value": "Overread Buffers - Improper handling of input data could result in denial of service."}]}], "affected": [{"vendor": "Progress Software", "product": "WS_FTP Server", "platforms": ["Windows"], "versions": [{"status": "affected", "version": "0", "lessThan": "2024.0.7", "versionType": "custom"}, {"status": "affected", "version": "0", "lessThan": "2025.0.4", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "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."}]}], "references": [{"url": "https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}], "workarounds": [{"lang": "en", "value": "Restrict network access to the SSH/SFTP service to trusted clients and disable SSH/SFTP access if it is not required. Contact Progress Software Technical Support for guidance on available mitigations.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<div>Restrict network access to the SSH/SFTP service to trusted clients and disable SSH/SFTP access if it is not required. Contact Progress Software Technical Support for guidance on available mitigations.</div>"}]}], "credits": [{"lang": "en", "value": "Niv Levy (restricted)", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["Windows"], "product": "WS_FTP Server", "vendor": "Progress Software", "versions": [{"lessThan": "2024.0.7", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "2025.0.4", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-90869", "lastModified": "2026-10-29T16:24:53.840", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-10-29T16:20:05.080", "references": [{"source": "[email protected]", "url": "https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-125"}], "source": "[email protected]", "type": "Primary"}]}

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