{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-22T07:13:12.222","vulnerabilities":[{"cve":{"id":"CVE-2021-35033","sourceIdentifier":"security@zyxel.com.tw","published":"2021-11-23T22:15:07.623","lastModified":"2024-11-21T06:11:42.923","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in specific versions of Zyxel NBG6818, NBG7815, WSQ20, WSQ50, WSQ60, and WSR30 firmware with pre-configured password management could allow an attacker to obtain root access of the device, if the local attacker dismantles the device and uses a USB-to-UART cable to connect the device, or if the remote assistance feature had been enabled by an authenticated user."},{"lang":"es","value":"Una vulnerabilidad en versiones específicas del firmware de Zyxel NBG6818, NBG7815, WSQ20, WSQ50, WSQ60 y WSR30 con administación de contraseñas preconfigurada podría permitir a un atacante obtener acceso root del dispositivo, si el atacante local desmonta el dispositivo y usa un cable USB a UART para conectarlo, o si la funcionalidad remote assistance ha sido habilitada por un usuario autenticado"}],"metrics":{"cvssMetricV31":[{"source":"security@zyxel.com.tw","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:C/I:C/A:C","baseScore":6.9,"accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"MEDIUM","exploitabilityScore":3.4,"impactScore":10.0,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"security@zyxel.com.tw","type":"Secondary","description":[{"lang":"en","value":"CWE-260"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-287"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:nbg6818_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.00\\(absc.5\\)c0","matchCriteriaId":"1A2D09B3-6B56-483A-AB24-808930548DA4"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:nbg6818:-:*:*:*:*:*:*:*","matchCriteriaId":"48E677C4-EE44-49C4-8CD5-CABE12F00097"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:nbg7815_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.00\\(absk.7\\)c0","matchCriteriaId":"E77E348E-B055-4D4F-A7E2-3209504DF004"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:nbg7815:-:*:*:*:*:*:*:*","matchCriteriaId":"D2E6D3DD-B789-4984-BE39-717071EC5B4E"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:wsq20_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.00\\(abof.11\\)c0","matchCriteriaId":"7FC79265-D940-4D82-A220-A28D435DDEF1"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:wsq20:-:*:*:*:*:*:*:*","matchCriteriaId":"49AD416D-70DC-49E9-AEBB-3DB68E1E42D7"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:wsq50_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.20\\(abkj.7\\)c0","matchCriteriaId":"FB22F798-9303-45FB-AD7D-10062177D564"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:wsq50:-:*:*:*:*:*:*:*","matchCriteriaId":"B604D99D-276D-48B3-A696-18A496F3DCFF"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:wsq60_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.20\\(abnd.8\\)c0","matchCriteriaId":"E67B738F-87A9-461C-93E1-45A600B73F62"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:wsq60:-:*:*:*:*:*:*:*","matchCriteriaId":"36E6D0E9-9BA8-42C4-9D6D-6DED3CA3BFEB"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:wsr30_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.00\\(abmy.12\\)c0","matchCriteriaId":"41B324F6-3588-468E-A63B-F621ABEDA92B"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:wsr30:-:*:*:*:*:*:*:*","matchCriteriaId":"2F062047-27C3-4FCE-A1BB-A3ED6E3BDA05"}]}]}],"references":[{"url":"https://www.tenable.com/security/research/tra-2022-06","source":"security@zyxel.com.tw","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.zyxel.com/support/Zyxel_security_advisory_for_pre-configured_password_management_vulnerability_of_home_routers_and_WiFi_systems.shtml","source":"security@zyxel.com.tw","tags":["Vendor Advisory"]},{"url":"https://www.tenable.com/security/research/tra-2022-06","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.zyxel.com/support/Zyxel_security_advisory_for_pre-configured_password_management_vulnerability_of_home_routers_and_WiFi_systems.shtml","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}