CVE-2026-6631

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{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:o:tenda:f451_firmware:*:*:*:*:*:*:*:*"], "modules": ["httpd"], "product": "F451", "vendor": "Tenda", "versions": [{"status": "affected", "version": "1.0.0.7_cn_svn7958"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in Tenda F451 1.0.0.7_cn_svn7958. Impacted is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter of the component httpd. Executing a manipulation of the argument page can lead to buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized."}, {"lang": "es", "value": "Se determin\u00f3 una vulnerabilidad en Tenda F451 1.0.0.7_cn_svn7958. Afectada es la funci\u00f3n fromwebExcptypemanFilter del archivo /goform/webExcptypemanFilter del componente httpd. La ejecuci\u00f3n de una manipulaci\u00f3n del argumento page puede llevar a un desbordamiento de b\u00fafer. El ataque puede ser lanzado remotamente. El exploit ha sido divulgado p\u00fablicamente y puede ser utilizado."}], "id": "CVE-2026-6631", "lastModified": "2026-10-26T22:10:00.163", "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-2026-6631", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-20T15:07:28.028739Z", "version": "2.0.3"}}]}, "published": "2026-04-20T11:16:19.583", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/Jimi-Lab/cve/issues/25"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/792904"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/358265"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/358265/cti"}, {"source": "cna@vuldb.com", "url": "https://www.tenda.com.cn/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-120"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.0.0.7_cn_svn7958"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "F451", "source": "cna", "vendor": "Tenda"}, "product": "f451", "vendor": "tenda"}], "analysis": {"en": {"generated_at": "2026-04-20T12:20:55.594845+00:00", "value": {"mitigation_remediation": ["Update the device firmware to a version that addresses the fromwebExcptypemanFilter buffer overflow, as released by the vendor.", "Restrict access to the Tenda F451 web interface by limiting management traffic to a trusted IP range or by placing the device behind a firewall.", "If an immediate firmware update is not possible, block or filter requests to /goform/webExcptypemanFilter using a local firewall or configuration setting to prevent the exploitation vector."], "summary": {"action": "Apply Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Tenda F451 model with firmware version 1.0.0.7_cn_svn7958. The affected component is the httpd service accessed via /goform/webExcptypemanFilter.", "description_and_impact": "The vulnerability lies in the fromwebExcptypemanFilter function of the Tenda F451 httpd component. A malformed page argument triggers a buffer overflow, which may enable an attacker to execute arbitrary code on the device with privileges of the httpd process, compromising confidentiality, integrity, and availability of traffic handled by the device.", "risk_and_exploitability": "The CVSS score of 8.7 indicates high severity. No EPSS data is available and the vulnerability is not listed in the CISA KEV catalog. The attack can be launched remotely by sending a crafted request to the web form endpoint, as the exploit has been publicly disclosed. Given the lack of mitigation on typical consumer routers, the risk to exposed devices is significant."}}}}, "created": "2026-04-20T12:30:05.672221+00:00", "updated": "2026-04-20T12:30:05.852585+00:00", "vendors": ["tenda", "tenda$PRODUCT$f451"]}