CVE-2026-5349

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{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:o:trendnet:tew-657brm_firmware:*:*:*:*:*:*:*:*"], "product": "TEW-657BRM", "vendor": "Trendnet", "versions": [{"status": "affected", "version": "1.00.1"}]}], "source": "cna@vuldb.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:trendnet:tew-657brm_firmware:1.00.1:*:*:*:*:*:*:*", "matchCriteriaId": "1BE1CB11-EC54-4B31-AD1C-CE00DD8CFAA7", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:trendnet:tew-657brm:-:*:*:*:*:*:*:*", "matchCriteriaId": "9CE54282-3202-477F-B965-3AF302F5DEC7", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [{"sourceIdentifier": "cna@vuldb.com", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was identified in Trendnet TEW-657BRM 1.00.1. The affected element is the function add_apcdb of the file /setup.cgi. The manipulation of the argument mac_pc_dba leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit is publicly available and might be used. The vendor confirms, that \"[t]he product in question (...) has been discontinued and end of life since June 23, 2011, that is more than 14 years ago. We no longer provide support for this product, so we are not able to confirm the vulnerabilities. We will make an announcement on our website's product support page and notify customers who registered their products with us.\" This vulnerability only affects products that are no longer supported by the maintainer."}, {"lang": "es", "value": "Una vulnerabilidad fue identificada en Trendnet TEW-657BRM 1.00.1. El elemento afectado es la funci\u00f3n add_apcdb del archivo /setup.cgi. La manipulaci\u00f3n del argumento mac_pc_dba conduce a un desbordamiento de b\u00fafer basado en pila. El ataque puede ser iniciado remotamente. El exploit est\u00e1 disponible p\u00fablicamente y podr\u00eda ser utilizado. El proveedor confirma que 'El producto en cuesti\u00f3n (...) ha sido descontinuado y ha llegado al fin de su vida \u00fatil desde el 23 de junio de 2011, es decir, hace m\u00e1s de 14 a\u00f1os. Ya no ofrecemos soporte para este producto, por lo que no podemos confirmar las vulnerabilidades. Haremos un anuncio en la p\u00e1gina de soporte de productos de nuestro sitio web y notificaremos a los clientes que registraron sus productos con nosotros.' Esta vulnerabilidad solo afecta a productos que ya no son compatibles con el mantenedor."}], "id": "CVE-2026-5349", "lastModified": "2026-07-24T21:10:00.143", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "COMPLETE", "baseScore": 9.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "cna@vuldb.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-5349", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-02T18:50:59.392538Z", "version": "2.0.3"}}]}, "published": "2026-04-02T16:16:27.597", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/panda666-888/vuls/blob/main/trendnet/tew-657brm/add_apcdb.md"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/submit/781563"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/vuln/354702"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/vuln/354702/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-121"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.00.1"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "TEW-657BRM", "source": "cna", "vendor": "Trendnet"}, "product": "tew-657brm", "vendor": "trendnet"}], "analysis": {"en": {"generated_at": "2026-04-07T20:38:47.028570+00:00", "value": {"mitigation_remediation": ["Replace the Trendnet TEW\u2011657BRM with a supported device or firmware that is actively maintained.", "Block external access to the /setup.cgi endpoint or isolate the device on a separate VLAN to prevent remote exploitation.", "If replacement is infeasible, disable or remove the add_apcdb functionality through configuration or firmware modifications if available.", "Continuously monitor router logs and network traffic for attempts to exploit the add_apcdb parameter."], "summary": {"action": "Replace Device", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The affected product is the Trendnet TEW\u2011657BRM wireless router running firmware version 1.00.1. This model has been discontinued and reached end\u2011of\u2011life since 2011, and no security updates are supplied.", "description_and_impact": "A stack-based buffer overflow exists in the add_apcdb function of /setup.cgi when the mac_pc_dba parameter is manipulated. This flaw can corrupt the call stack, and although the description does not explicitly confirm arbitrary code execution, the overflow is a well-known vector for executing attacker-supplied code, so it is inferred that remote code execution is possible.", "risk_and_exploitability": "The flaw can be triggered remotely and public exploits exist, giving the threat actor a ready-to-use attack path. The CVSS score of 8.7 indicates high severity, while the EPSS score of less than 1% suggests low likelihood of current exploitation. The vendor\u2019s product is no longer supported, and the vulnerability is not listed in the CISA KEV catalog, yet the combination of a high-impact remote trigger and the absence of a vendor fix makes it a significant risk."}}}}, "created": "2026-04-02T20:11:29.423273+00:00", "updated": "2026-04-08T19:55:38.336187+00:00", "vendors": ["trendnet", "trendnet$PRODUCT$tew-657brm"]}