{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T16:31:14.160","vulnerabilities":[{"cve":{"id":"CVE-2021-34863","sourceIdentifier":"zdi-disclosures@trendmicro.com","published":"2021-10-25T17:15:08.600","lastModified":"2024-11-21T06:11:21.887","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 1.01rc001 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the var:page parameter provided to the webproc endpoint. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13271."},{"lang":"es","value":"Esta vulnerabilidad permite a atacantes adyacentes a la red ejecutar código arbitrario en las instalaciones afectadas de los routers D-Link DAP-2020 versión 1.01rc001. No es requerida una autenticación para explotar esta vulnerabilidad. El fallo específico se presenta en el manejo del parámetro var:page proporcionado al endpoint webproc. El problema resulta de una falta de comprobación apropiada de la longitud de los datos proporcionados por el usuario antes de copiarlos en un búfer de longitud fija basado en la pila. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto de root. Fue ZDI-CAN-13271"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}],"cvssMetricV30":[{"source":"zdi-disclosures@trendmicro.com","type":"Secondary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:A/AC:L/Au:N/C:P/I:P/A:P","baseScore":5.8,"accessVector":"ADJACENT_NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":6.5,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"zdi-disclosures@trendmicro.com","type":"Secondary","description":[{"lang":"en","value":"CWE-121"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:dlink:dap-2020_firmware:*:*:*:*:*:*:*:*","versionEndIncluding":"1.01","matchCriteriaId":"668A512C-CAEF-4BFD-8BF7-F8AB37FEF57B"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:dlink:dap-2020:*:*:*:*:*:*:*:*","matchCriteriaId":"87D16930-1336-4B53-A2B4-1AE07F91D198"}]}]}],"references":[{"url":"https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201","source":"zdi-disclosures@trendmicro.com","tags":["Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-979/","source":"zdi-disclosures@trendmicro.com","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-979/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"]}]}}]}