CVE-2026-36778

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Shenzhen Tenda Technology Co., Ltd Tenda O3 Wireless Router v1.0.0.5(4180) was discovered to contain a stack overflow in the username parameter of the R7WebsSecurityHandler function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request."}, {"lang": "es", "value": "Se descubri\u00f3 que el router inal\u00e1mbrico Tenda O3 v1.0.0.5(4180) de Shenzhen Tenda Technology Co., Ltd conten\u00eda un desbordamiento de pila en el par\u00e1metro username de la funci\u00f3n R7WebsSecurityHandler. Esta vulnerabilidad permite a los atacantes causar una Denegaci\u00f3n de Servicio (DoS) a trav\u00e9s de una solicitud HTTP manipulada."}], "id": "CVE-2026-36778", "lastModified": "2026-07-23T09:10:00.113", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 4.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-36778", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-10T17:38:59.667214Z", "version": "2.0.3"}}]}, "published": "2026-06-09T19:17:44.090", "references": [{"source": "cve@mitre.org", "url": "https://github.com/xhh0124/SemVulLLM/tree/main/O3/R7WebsSecurityHandler"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.0.0.5(4180)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "o3_wireless_router", "vendor": "tenda"}], "created": "2026-06-09T23:00:15.721648+00:00", "title": "Stack Overflow in Username Parameter Causes DoS on Tenda O3 Wireless Router", "updated": "2026-06-10T20:15:24.848473+00:00", "vendors": ["tenda", "tenda$PRODUCT$o3_wireless_router"]}