CVE-2021-28799

{"id": "CVE-2021-28799", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Secondary", "source": "security@qnapsecurity.com.tw", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 10.0, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.9}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2021-05-13T03:15:06.843", "references": [{"url": "https://www.qnap.com/en/security-advisory/QSA-21-13", "tags": ["Vendor Advisory"], "source": "security@qnapsecurity.com.tw"}, {"url": "https://www.qnap.com/en/security-advisory/QSA-21-13", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28799", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security@qnapsecurity.com.tw", "description": [{"lang": "en", "value": "CWE-285"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}], "descriptions": [{"lang": "en", "value": "An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync. ) If exploited, the vulnerability allows remote attackers to log in to a device. This issue affects: QNAP Systems Inc. HBS 3 versions prior to v16.0.0415 on QTS 4.5.2; versions prior to v3.0.210412 on QTS 4.3.6; versions prior to v3.0.210411 on QTS 4.3.4; versions prior to v3.0.210411 on QTS 4.3.3; versions prior to v16.0.0419 on QuTS hero h4.5.1; versions prior to v16.0.0419 on QuTScloud c4.5.1~c4.5.4. This issue does not affect: QNAP Systems Inc. HBS 2 . QNAP Systems Inc. HBS 1.3 ."}, {"lang": "es", "value": "Se ha reportado una vulnerabilidad de autorizaci\u00f3n inapropiada que afecta al QNAP NAS que ejecuta HBS versi\u00f3n 3 (Hybrid Backup Sync). Si es explotada, la vulnerabilidad permite a atacantes remotos iniciar sesi\u00f3n en un dispositivo. Este problema afecta a: QNAP Systems Inc. HBS 3 versiones anteriores a v16.0.0415 en QTS versi\u00f3n 4.5.2; versiones anteriores a v3.0.210412 en QTS versi\u00f3n 4.3.6; versiones anteriores a v3.0.210411 en QTS versi\u00f3n 4.3.4; versiones anteriores a v3.0.210411 en QTS versi\u00f3n 4.3.3; versiones anteriores a 16.0.0419 en QuTS hero versiones h4.5.1; anterior a versi\u00f3n v16.0.0419 en QuTScloud versiones c4.5.1~c4.5.4. Este problema no afecta a: QNAP Systems Inc. HBS versi\u00f3n 2. QNAP Systems Inc. HBS versi\u00f3n 1.3"}], "lastModified": "2025-10-22T00:17:30.963", "cisaActionDue": "2022-04-21", "cisaExploitAdd": "2022-03-31", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A18656F9-AFB4-44BC-AF08-E1A0A5D2EF49", "versionEndExcluding": "16.0.0415"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:qnap:qts:4.5.2:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "FDCF1153-3508-4BF6-ADC8-ADDCB2E2235C"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D5920EA4-EEA5-4F64-B06B-EED06E824864", "versionEndExcluding": "3.0.210412"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:qnap:qts:4.3.6:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "FE9FAC96-AA2A-4CA5-A170-8C0E6BD47391"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "78491B95-5835-411B-B188-30E496BCB10A", "versionEndExcluding": "3.0.210411"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:qnap:qts:4.3.3:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "2E534876-EFBD-4C85-B2C3-DA5CF07574CA"}, {"criteria": "cpe:2.3:a:qnap:qts:4.3.4:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "7AC043EF-7BDF-4324-BF07-323C10BE98A3"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BB2A5649-4BB9-46E9-8A1A-B6046125BD92", "versionEndExcluding": "16.0.0419"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:qnap:quts_hero:h4.5.1:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "548228B3-EB2C-42C1-895B-DA6DC5CA26EE"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BB2A5649-4BB9-46E9-8A1A-B6046125BD92", "versionEndExcluding": "16.0.0419"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:qnap:qutscloud:*:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "FEDF704D-D5AD-45C2-AD7D-E53189C72E1A", "versionEndIncluding": "c4.5.4", "versionStartIncluding": "c4.5.1"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "security@qnapsecurity.com.tw", "cisaRequiredAction": "Apply updates per vendor instructions.", "cisaVulnerabilityName": "QNAP NAS Improper Authorization Vulnerability"}