{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-29T23:15:31.621","vulnerabilities":[{"cve":{"id":"CVE-2021-35031","sourceIdentifier":"security@zyxel.com.tw","published":"2021-12-28T11:15:07.463","lastModified":"2024-11-21T06:11:42.600","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the TFTP client of Zyxel GS1900 series firmware, XGS1210 series firmware, and XGS1250 series firmware, which could allow an authenticated LAN user to execute arbitrary OS commands via the GUI of the vulnerable device."},{"lang":"es","value":"Una vulnerabilidad en el cliente TFTP del firmware de la serie Zyxel GS1900 versión 2.60, podría permitir a un usuario local autenticado ejecutar comandos arbitrarios del SO"}],"metrics":{"cvssMetricV31":[{"source":"security@zyxel.com.tw","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","baseScore":6.8,"baseSeverity":"MEDIUM","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":0.9,"impactScore":5.9},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":8.0,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.1,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:A/AC:L/Au:S/C:C/I:C/A:C","baseScore":7.7,"accessVector":"ADJACENT_NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":5.1,"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-78"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-78"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-8_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(aahh.0\\)-20211208","matchCriteriaId":"AF8E2361-4094-4EF4-ABD1-2AA7F6306F17"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-8:-:*:*:*:*:*:*:*","matchCriteriaId":"51D33F50-B5A4-4AEF-972C-7FF089C21D52"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-8hp_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(aahi.0\\)-20211208","matchCriteriaId":"B977BC02-1C92-4A11-B63B-08D521257313"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-8hp:-:*:*:*:*:*:*:*","matchCriteriaId":"27602862-EFB7-402B-994E-254A0B210820"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-10hp_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(aazi.0\\)-20211208","matchCriteriaId":"0426305E-B895-4F3F-BBFD-B67532B23D45"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-10hp:-:*:*:*:*:*:*:*","matchCriteriaId":"89201505-07AF-4F9C-9304-46F2707DB9B4"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-16_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(aahj.0\\)-20211208","matchCriteriaId":"DEC06507-70AD-4518-A206-51DCF3A372EC"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-16:-:*:*:*:*:*:*:*","matchCriteriaId":"5078F7A5-D03B-4D3A-9C19-57DFF4D6BF7A"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-24e_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(aahk.0\\)-20211208","matchCriteriaId":"B8FA189B-1FCD-4A54-8867-8F640EA6E23D"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-24e:-:*:*:*:*:*:*:*","matchCriteriaId":"A6456AD6-8A1D-4D3D-AC1A-ABE442242B1B"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-24ep_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(abto.0\\)-20211208","matchCriteriaId":"2E6A17B4-4E5A-4B59-8D4E-34D3D4E474FD"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-24ep:-:*:*:*:*:*:*:*","matchCriteriaId":"B22AA8B1-11E2-408F-A1F6-0F8AF32AB131"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-24_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(aahl.0\\)-20211208","matchCriteriaId":"FDCE590C-002A-4DAA-84AB-23B976F0F510"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-24:-:*:*:*:*:*:*:*","matchCriteriaId":"F4F55299-70D5-4CE1-A1EC-D79B469B94F7"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-24hp_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(aahm.0\\)-20211208","matchCriteriaId":"A54568EB-94F3-4817-BD25-C5F52ED1B9AB"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-24hp:-:*:*:*:*:*:*:*","matchCriteriaId":"74B1D264-99AC-4AA8-955C-602F2DA5B885"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(aatp.0\\)-20211208","matchCriteriaId":"48A11824-D68D-41F0-BA0B-69C6CEEC5948"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-24hpv2:-:*:*:*:*:*:*:*","matchCriteriaId":"512D9A91-8DA7-47F1-AC77-AF743F99BFF3"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-48_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(aahn.0\\)-20211208","matchCriteriaId":"FFBB3AFE-A826-43DC-A18F-FFD68E08E23E"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-48:-:*:*:*:*:*:*:*","matchCriteriaId":"CFB7D4BF-7D17-48D3-990D-4BADAC8BD868"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-48hp_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(aaho.0\\)-20211208","matchCriteriaId":"5E7B8A54-65D5-41E6-89BF-0B4DF6D30125"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-48hp:-:*:*:*:*:*:*:*","matchCriteriaId":"566A9E8C-AF55-4331-B9B0-F65EB900B0BE"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:gs1900-48hpv2_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.70\\(abtq.0\\)-20211208","matchCriteriaId":"CAAE5234-410D-436F-86CD-744F3127AEAF"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:gs1900-48hpv2:-:*:*:*:*:*:*:*","matchCriteriaId":"BC74C679-6D22-47E4-AE8A-2647B1AA4276"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:xgs1210-12_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.00\\(abty.5\\)c0","matchCriteriaId":"DAB20E61-9B6E-4AD4-B365-98ED5546F7EF"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:xgs1210-12:-:*:*:*:*:*:*:*","matchCriteriaId":"79ECDFC6-ABE3-43A1-BE57-4EC8C7F2896E"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:xgs1250-12_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"1.00\\(abwe.1\\)c0","matchCriteriaId":"678F3EF1-23DA-4252-A284-F639CFC5CB8A"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:xgs1250-12:-:*:*:*:*:*:*:*","matchCriteriaId":"0BAEB6C1-5F51-4AAC-B8D3-5F06F139639E"}]}]}],"references":[{"url":"https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml","source":"security@zyxel.com.tw","tags":["Patch","Vendor Advisory"]},{"url":"https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"]}]}}]}