CVE-2021-45989

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:tendacn:g1_firmware:15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*", "matchCriteriaId": "F1F4A805-B82C-4815-9999-E2D971E082E8", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:tendacn:g1:-:*:*:*:*:*:*:*", "matchCriteriaId": "6839E6D3-4F3E-40FB-828E-D25088E85A21", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:tendacn:g3_firmware:15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*", "matchCriteriaId": "67707336-51C8-428B-B4E2-084302C5806D", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:tendacn:g3:-:*:*:*:*:*:*:*", "matchCriteriaId": "0A5CDD3E-C5D2-44DF-B330-065CF8ECC29B", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a stack overflow in the function guestWifiRuleRefresh. This vulnerability allows attackers to cause a Denial of Service (DoS) via the qosGuestUpstream and qosGuestDownstream parameters."}, {"lang": "es", "value": "Se ha detectado que los routers Tenda G1 y G3 versi\u00f3n v15.11.0.17(9502)_CN, contienen un desbordamiento de pila en la funci\u00f3n guestWifiRuleRefresh. Esta vulnerabilidad permite a atacantes causar una denegaci\u00f3n de servicio (DoS) por medio de los par\u00e1metros qosGuestUpstream y qosGuestDownstream"}], "id": "CVE-2021-45989", "lastModified": "2026-06-17T04:14:22.473", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.8, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-02-04T02:15:08.677", "references": [{"source": "cve@mitre.org", "tags": ["Broken Link"], "url": "https://github.com/pjqwudi/my_vuln/blob/main/Tenda/vuln_4/4.md"}, {"source": "nvd@nist.gov", "tags": ["Third Party Advisory"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/218959"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "https://github.com/pjqwudi/my_vuln/blob/main/Tenda/vuln_4/4.md"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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