CVE-2021-20855

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{"affected": [{"affectedData": [{"product": "ELECOM LAN routers", "vendor": "ELECOM CO.,LTD.", "versions": [{"status": "affected", "version": "WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior"}]}], "source": "vultures@jpcert.or.jp"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:elecom:wrh-733gbk_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "28989732-6761-4356-A4CF-BE172E72C41B", "versionEndIncluding": "1.02.9", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:elecom:wrh-733gbk:-:*:*:*:*:*:*:*", "matchCriteriaId": "84FA6C86-7C8A-4CF5-9065-CDECDFF65F7E", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:elecom:wrh-733gwh_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "9AC22BBF-F3CF-4B47-B314-BA3DA9A4663D", "versionEndIncluding": "1.02.9", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:elecom:wrh-733gwh:-:*:*:*:*:*:*:*", "matchCriteriaId": "08BFC900-6728-4EDB-8CC9-27101DF47FC9", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Cross-site scripting vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors."}, {"lang": "es", "value": "Una vulnerabilidad de tipo cross-site scripting en los routers LAN de ELECOM (firmware WRH-733GBK versiones v1.02.9 y anteriores y firmware WRH-733GWH versiones v1.02.9 y anteriores) permite a un atacante remoto autenticado inyectar un script arbitrario por medio de vectores no especificados"}], "id": "CVE-2021-20855", "lastModified": "2026-06-17T03:34:32.857", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 3.5, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-12-01T03:15:06.850", "references": [{"source": "vultures@jpcert.or.jp", "tags": ["Third Party Advisory"], "url": "https://jvn.jp/en/jp/JVN88993473/index.html"}, {"source": "vultures@jpcert.or.jp", "tags": ["Vendor Advisory"], "url": "https://www.elecom.co.jp/news/security/20211130-01/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://jvn.jp/en/jp/JVN88993473/index.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.elecom.co.jp/news/security/20211130-01/"}], "sourceIdentifier": "vultures@jpcert.or.jp", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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