CVE-2021-26566

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"cpe:2.3:o:synology:skynas_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "53EF087B-D7E9-4F9A-803A-B0260C495C67", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:synology:skynas:-:*:*:*:*:*:*:*", "matchCriteriaId": "D0A88A76-CF8A-4D29-B480-E5317219072D", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:synology:diskstation_manager_unified_controller:3.0:*:*:*:*:*:*:*", "matchCriteriaId": "6B04366E-B5F8-4835-B1FB-106AFD3D3785", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:synology:uc3200:-:*:*:*:*:*:*:*", "matchCriteriaId": "1100D972-198E-45F9-8F04-763F6FE88377", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Insertion of sensitive information into sent data vulnerability in synorelayd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary commands via inbound QuickConnect traffic."}, {"lang": "es", "value": "Una vulnerabilidad de inserci\u00f3n de informaci\u00f3n confidencial en datos enviados en synorelayd en Synology DiskStation Manager (DSM) versiones anteriores a 6.2.3-25426-3, permite a atacantes de tipo man-in-the-middle ejecutar comandos arbitrarios por medio del tr\u00e1fico entrante QuickConnect"}], "id": "CVE-2021-26566", "lastModified": "2026-06-17T03:43:29.400", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, 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