{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6632", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-04-19T17:05:50.258Z", "datePublished": "2026-04-20T11:00:19.795Z", "dateUpdated": "2026-04-20T11:00:19.795Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-04-20T11:00:19.795Z"}, "title": "Tenda F451 httpd SafeClientFilter fromSafeClientFilter buffer overflow", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-120", "lang": "en", "description": "Buffer Overflow"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-119", "lang": "en", "description": "Memory Corruption"}]}], "affected": [{"vendor": "Tenda", "product": "F451", "versions": [{"version": "1.0.0.7_cn_svn7958", "status": "affected"}], "cpes": ["cpe:2.3:o:tenda:f451_firmware:*:*:*:*:*:*:*:*"], "modules": ["httpd"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was identified in Tenda F451 1.0.0.7_cn_svn7958. The affected element is the function fromSafeClientFilter of the file /goform/SafeClientFilter of the component httpd. The manipulation of the argument menufacturer/Go leads to buffer overflow. Remote exploitation of the attack is possible. The exploit is publicly available and might be used."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 8.7, "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", "baseSeverity": "HIGH"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R", "baseSeverity": "HIGH"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 8.8, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R", "baseSeverity": "HIGH"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 9, "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-04-19T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-04-19T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-04-19T19:11:05.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "jimi666 (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/358266", "name": "VDB-358266 | Tenda F451 httpd SafeClientFilter fromSafeClientFilter buffer overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/358266/cti", "name": "VDB-358266 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/792905", "name": "Submit #792905 | Tenda F451_kfw_V1.0.0.7_cn_svn7958 V1.0.0.7 Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://github.com/Jimi-Lab/cve/issues/26", "tags": ["exploit", "issue-tracking"]}, {"url": "https://www.tenda.com.cn/", "tags": ["product"]}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was identified in Tenda F451 1.0.0.7_cn_svn7958. The affected element is the function fromSafeClientFilter of the file /goform/SafeClientFilter of the component httpd. The manipulation of the argument menufacturer/Go leads to buffer overflow. Remote exploitation of the attack is possible. The exploit is publicly available and might be used."}], "id": "CVE-2026-6632", "lastModified": "2026-04-20T11:16:19.760", "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": "Primary"}], "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"}]}, "published": "2026-04-20T11:16:19.760", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/Jimi-Lab/cve/issues/26"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/792905"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/358266"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/358266/cti"}, {"source": "cna@vuldb.com", "url": "https://www.tenda.com.cn/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-120"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"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": "2026-04-20T12:20:36.284588+00:00", "value": {"mitigation_remediation": ["Apply the latest firmware update for the Tenda F451 that contains the buffer\u2011overflow fix; this is the preferred and definitive solution.", "If a firmware upgrade cannot be performed immediately, disable the SafeClientFilter feature through the device's management interface or block external access to the /goform/SafeClientFilter URL using the router\u2019s firewall or access\u2011control list.", "Isolate the device on a separate network segment, restrict inbound connections to trusted networks, and monitor for abnormal traffic or exploitation attempts."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The only vendor/product explicitly listed in the CNA data is Tenda F451. The affected firmware is identified as 1.0.0.7_cn_svn7958. No additional version ranges are provided, so any device running that exact build or earlier unpatched builds is at risk.", "description_and_impact": "The vulnerability resides in the fromSafeClientFilter function within the httpd component of the Tenda F451 firmware. Providing the string \"menufacturer/Go\" as an argument to the /goform/SafeClientFilter endpoint a buffer overflow, which can be leveraged by an attacker to execute arbitrary code on the device. The description states that remote exploitation is possible and that a public exploit exists, indicating that an attacker can gain control without local access.", "risk_and_exploitability": "The CVSS base score of 8.7 categorizes this flaw as a high severity vulnerability. EPSS information is not available, so the current evidence does not quantify exploitation frequency, but the statement that a public exploit is available suggests that the risk of real-world attacks is substantial. Because the flaw allows remote code execution and is publicly documented, a likely attack vector is a network-facing HTTP request to the affected endpoint. The device is not listed in the CISA KEV catalog, which may delay awareness, but the severity and public exploit availability underscore the need for rapid remediation."}}}}, "created": "2026-04-20T12:30:05.670852+00:00", "updated": "2026-04-20T12:30:05.851791+00:00", "vendors": ["tenda", "tenda$PRODUCT$f451"]}