{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-21T04:52:41.154","vulnerabilities":[{"cve":{"id":"CVE-2021-28797","sourceIdentifier":"security@qnapsecurity.com.tw","published":"2021-04-14T09:15:13.910","lastModified":"2024-11-21T06:00:13.237","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A stack-based buffer overflow vulnerability has been reported to affect QNAP NAS devices running Surveillance Station. If exploited, this vulnerability allows attackers to execute arbitrary code. QNAP have already fixed this vulnerability in the following versions: Surveillance Station 5.1.5.4.3 (and later) for ARM CPU NAS (64bit OS) and x86 CPU NAS (64bit OS) Surveillance Station 5.1.5.3.3 (and later) for ARM CPU NAS (32bit OS) and x86 CPU NAS (32bit OS)"},{"lang":"es","value":"Se ha reportado una vulnerabilidad de desbordamiento del búfer en la región stack de la memoria que afecta a los dispositivos QNAP NAS que ejecutan Surveillance Station. Si es explotada, esta vulnerabilidad permite a atacantes ejecutar código arbitrario. QNAP ya ha corregido esta vulnerabilidad en las siguientes versiones: Surveillance Station versiones 5.1.5.4.3 (y posteriores) para ARM CPU NAS (Sistema Operativo de 64 bits) y x86 CPU NAS (Sistema Operativo de 64 bits) Surveillance Station versiones 5.1.5.3.3 (y posteriores) para ARM CPU NAS (Sistema Operativo de 32 bits) y CPU NAS x86 (Sistema Operativo de 32 bits)"}],"metrics":{"cvssMetricV31":[{"source":"security@qnapsecurity.com.tw","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","baseScore":7.5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"HIGH","exploitabilityScore":10.0,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"security@qnapsecurity.com.tw","type":"Secondary","description":[{"lang":"en","value":"CWE-121"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-787"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:qnap:surveillance_station:*:*:*:*:*:*:*:*","versionEndExcluding":"5.1.5.3.3","matchCriteriaId":"60DB076A-4279-4E8E-80C2-D1237B99C4A0"},{"vulnerable":true,"criteria":"cpe:2.3:a:qnap:surveillance_station:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1.5.4.0","versionEndExcluding":"5.1.5.4.3","matchCriteriaId":"E0928C86-06D9-4FFB-AC70-9BB18DB49956"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:qnap:nas:-:*:*:*:*:*:*:*","matchCriteriaId":"80C76690-809E-4A12-BF56-D713DD49ED27"}]}]}],"references":[{"url":"https://www.qnap.com/en/security-advisory/qsa-21-07","source":"security@qnapsecurity.com.tw","tags":["Vendor Advisory"]},{"url":"https://www.qnap.com/en/security-advisory/qsa-21-07","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}