{"containers": {"cna": {"affected": [{"product": "GS1900 series firmware", "vendor": "Zyxel", "versions": [{"status": "affected", "version": "2.60"}]}, {"product": "XGS1210 series firmware", "vendor": "Zyxel", "versions": [{"status": "affected", "version": "1.00(ABTY.4)C0"}]}, {"product": "XGS1250 series firmware", "vendor": "Zyxel", "versions": [{"status": "affected", "version": "1.00(ABWE.0)C0"}]}], "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."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-78", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-12-28T16:05:43.000Z", "orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "shortName": "Zyxel"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@zyxel.com.tw", "ID": "CVE-2021-35031", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "GS1900 series firmware", "version": {"version_data": [{"version_value": "2.60"}]}}, {"product_name": "XGS1210 series firmware", "version": {"version_data": [{"version_value": "1.00(ABTY.4)C0"}]}}, {"product_name": "XGS1250 series firmware", "version": {"version_data": [{"version_value": "1.00(ABWE.0)C0"}]}}]}, "vendor_name": "Zyxel"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "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."}]}, "impact": {"cvss": {"baseScore": "6.8", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')"}]}]}, "references": {"reference_data": [{"name": "https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml", "refsource": "CONFIRM", "url": "https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T00:33:49.873Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml"}]}]}, "cveMetadata": {"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "assignerShortName": "Zyxel", "cveId": "CVE-2021-35031", "datePublished": "2021-12-28T10:36:23.000Z", "dateReserved": "2021-06-17T00:00:00.000Z", "dateUpdated": "2024-08-04T00:33:49.873Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "GS1900 series firmware", "vendor": "Zyxel", "versions": [{"status": "affected", "version": "2.60"}]}, {"product": "XGS1210 series firmware", "vendor": "Zyxel", "versions": [{"status": "affected", "version": "1.00(ABTY.4)C0"}]}, {"product": "XGS1250 series firmware", "vendor": "Zyxel", "versions": [{"status": "affected", "version": "1.00(ABWE.0)C0"}]}], "source": "security@zyxel.com.tw"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-8_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "AF8E2361-4094-4EF4-ABD1-2AA7F6306F17", "versionEndExcluding": "2.70\\(aahh.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-8:-:*:*:*:*:*:*:*", "matchCriteriaId": "51D33F50-B5A4-4AEF-972C-7FF089C21D52", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-8hp_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "B977BC02-1C92-4A11-B63B-08D521257313", "versionEndExcluding": "2.70\\(aahi.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-8hp:-:*:*:*:*:*:*:*", "matchCriteriaId": "27602862-EFB7-402B-994E-254A0B210820", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-10hp_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "0426305E-B895-4F3F-BBFD-B67532B23D45", "versionEndExcluding": "2.70\\(aazi.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-10hp:-:*:*:*:*:*:*:*", "matchCriteriaId": "89201505-07AF-4F9C-9304-46F2707DB9B4", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-16_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "DEC06507-70AD-4518-A206-51DCF3A372EC", "versionEndExcluding": "2.70\\(aahj.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-16:-:*:*:*:*:*:*:*", "matchCriteriaId": "5078F7A5-D03B-4D3A-9C19-57DFF4D6BF7A", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-24e_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "B8FA189B-1FCD-4A54-8867-8F640EA6E23D", "versionEndExcluding": "2.70\\(aahk.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-24e:-:*:*:*:*:*:*:*", "matchCriteriaId": "A6456AD6-8A1D-4D3D-AC1A-ABE442242B1B", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-24ep_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "2E6A17B4-4E5A-4B59-8D4E-34D3D4E474FD", "versionEndExcluding": "2.70\\(abto.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-24ep:-:*:*:*:*:*:*:*", "matchCriteriaId": "B22AA8B1-11E2-408F-A1F6-0F8AF32AB131", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-24_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "FDCE590C-002A-4DAA-84AB-23B976F0F510", "versionEndExcluding": "2.70\\(aahl.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-24:-:*:*:*:*:*:*:*", "matchCriteriaId": "F4F55299-70D5-4CE1-A1EC-D79B469B94F7", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-24hp_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "A54568EB-94F3-4817-BD25-C5F52ED1B9AB", "versionEndExcluding": "2.70\\(aahm.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-24hp:-:*:*:*:*:*:*:*", "matchCriteriaId": "74B1D264-99AC-4AA8-955C-602F2DA5B885", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "48A11824-D68D-41F0-BA0B-69C6CEEC5948", "versionEndExcluding": "2.70\\(aatp.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-24hpv2:-:*:*:*:*:*:*:*", "matchCriteriaId": "512D9A91-8DA7-47F1-AC77-AF743F99BFF3", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-48_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "FFBB3AFE-A826-43DC-A18F-FFD68E08E23E", "versionEndExcluding": "2.70\\(aahn.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-48:-:*:*:*:*:*:*:*", "matchCriteriaId": "CFB7D4BF-7D17-48D3-990D-4BADAC8BD868", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-48hp_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "5E7B8A54-65D5-41E6-89BF-0B4DF6D30125", "versionEndExcluding": "2.70\\(aaho.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-48hp:-:*:*:*:*:*:*:*", "matchCriteriaId": "566A9E8C-AF55-4331-B9B0-F65EB900B0BE", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:gs1900-48hpv2_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "CAAE5234-410D-436F-86CD-744F3127AEAF", "versionEndExcluding": "2.70\\(abtq.0\\)-20211208", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:gs1900-48hpv2:-:*:*:*:*:*:*:*", "matchCriteriaId": "BC74C679-6D22-47E4-AE8A-2647B1AA4276", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:xgs1210-12_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "DAB20E61-9B6E-4AD4-B365-98ED5546F7EF", "versionEndExcluding": "1.00\\(abty.5\\)c0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:xgs1210-12:-:*:*:*:*:*:*:*", "matchCriteriaId": "79ECDFC6-ABE3-43A1-BE57-4EC8C7F2896E", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:xgs1250-12_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "678F3EF1-23DA-4252-A284-F639CFC5CB8A", "versionEndExcluding": "1.00\\(abwe.1\\)c0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:xgs1250-12:-:*:*:*:*:*:*:*", "matchCriteriaId": "0BAEB6C1-5F51-4AAC-B8D3-5F06F139639E", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "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 versi\u00f3n 2.60, podr\u00eda permitir a un usuario local autenticado ejecutar comandos arbitrarios del SO"}], "id": "CVE-2021-35031", "lastModified": "2026-06-17T03:56:58.753", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "SINGLE", "availabilityImpact": "COMPLETE", "baseScore": 7.7, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:A/AC:L/Au:S/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 5.1, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.9, "impactScore": 5.9, "source": "security@zyxel.com.tw", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-12-28T11:15:07.463", "references": [{"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"], "url": "https://www.zyxel.com/support/Zyxel_security_advisory_for_OS_command_injection_vulnerabilities_of_switches.shtml"}], "sourceIdentifier": "security@zyxel.com.tw", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "security@zyxel.com.tw", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-78"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}