CVE-2021-25666

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{"affected": [{"affectedData": [{"product": "SCALANCE W780 and W740 (IEEE 802.11n) family", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V6.3"}]}], "source": "productcert@siemens.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:scalance_w780_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "BCE9B4EC-DF55-4F8A-B130-C0F8F286441C", "versionEndExcluding": "6.3", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:scalance_w780:-:*:*:*:*:*:*:*", "matchCriteriaId": "CB406941-2C32-4551-8C1C-9E8DC4157E73", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:scalance_w740_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "00F55236-C25F-4F93-B74C-AE75EEDBD388", "versionEndExcluding": "6.3", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:scalance_w740:-:*:*:*:*:*:*:*", "matchCriteriaId": "5BFC9F18-3070-4F23-88D9-F40CDF884174", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been identified in SCALANCE W780 and W740 (IEEE 802.11n) family (All versions < V6.3). Sending specially crafted packets through the ARP protocol to an affected device could cause a partial denial-of-service, preventing the device to operate normally for a short period of time."}, {"lang": "es", "value": "Se ha identificado una vulnerabilidad en la familia SCALANCE W780 y W740 (IEEE 802.11n) (todas las versiones anteriores a V6.3).&#xa0;El env\u00edo de paquetes especialmente dise\u00f1ados por medio del protocolo ARP hacia un dispositivo afectado podr\u00eda causar una denegaci\u00f3n de servicio parcial, impidiendo al dispositivo funcionar normalmente durante un corto per\u00edodo de tiempo"}], "id": "CVE-2021-25666", "lastModified": "2026-06-17T03:42:19.073", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 3.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 6.5, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-09T18:15:51.573", "references": [{"source": "productcert@siemens.com", "tags": ["Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-686152.pdf"}, {"source": "productcert@siemens.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-040-07"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-686152.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-040-07"}], "sourceIdentifier": "productcert@siemens.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "productcert@siemens.com", "type": "Secondary"}]}

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