CVE-2021-35393

{"id": "CVE-2021-35393", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 10.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2021-08-16T12:15:07.230", "references": [{"url": "https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain", "tags": ["Exploit", "Third Party Advisory", "Broken Link"], "source": "cve@mitre.org"}, {"url": "https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en", "tags": ["Patch", "Vendor Advisory", "Broken Link"], "source": "cve@mitre.org"}, {"url": "https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain", "tags": ["Exploit", "Third Party Advisory", "Broken Link"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en", "tags": ["Patch", "Vendor Advisory", "Broken Link"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "Realtek Jungle SDK version v2.x up to v3.4.14B provides a 'WiFi Simple Config' server that implements both UPnP and SSDP protocols. The binary is usually named wscd or mini_upnpd and is the successor to miniigd. The server is vulnerable to a stack buffer overflow vulnerability that is present due to unsafe parsing of the UPnP SUBSCRIBE/UNSUBSCRIBE Callback header. Successful exploitation of this vulnerability allows remote unauthenticated attackers to gain arbitrary code execution on the affected device."}, {"lang": "es", "value": "Realtek Jungle SDK versiones v2.x hasta v3.4.14B, proporciona un servidor \"WiFi Simple Config\" que implementa los protocolos UPnP y SSDP. El binario es usualmente llamado wscd o mini_upnpd y es el sucesor de miniigd. El servidor es vulnerable a una vulnerabilidad de desbordamiento del buffer de la pila que est\u00e1 presente debido al an\u00e1lisis no seguro del encabezado UPnP SUBSCRIBE/UNSUBSCRIBE Callback. Una explotaci\u00f3n con \u00e9xito de esta vulnerabilidad permite a atacantes no autenticados remotos conseguir una ejecuci\u00f3n de c\u00f3digo arbitrario en el dispositivo afectado."}], "lastModified": "2025-08-13T15:22:43.290", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:realtek:rtl819x_jungle_software_development_kit:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "00E83926-7610-44FA-9837-B03D386A07D5", "versionEndIncluding": "3.4.14b", "versionStartIncluding": "2.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}