{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5991", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-04-09T12:37:10.967Z", "datePublished": "2026-04-09T23:45:14.599Z", "dateUpdated": "2026-04-09T23:45:14.599Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-04-09T23:45:14.599Z"}, "title": "Tenda F451 WrlExtraSet formWrlExtraSet stack-based overflow", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-121", "lang": "en", "description": "Stack-based Buffer Overflow"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-119", "lang": "en", "description": "Memory Corruption"}]}], "affected": [{"vendor": "Tenda", "product": "F451", "versions": [{"version": "1.0.0.7", "status": "affected"}], "cpes": ["cpe:2.3:o:tenda:f451_firmware:*:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was found in Tenda F451 1.0.0.7. Affected by this issue is the function formWrlExtraSet of the file /goform/WrlExtraSet. The manipulation of the argument GO results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could 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": "2026-04-09T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-04-09T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-04-09T14:42:56.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "Jimi (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/356545", "name": "VDB-356545 | Tenda F451 WrlExtraSet formWrlExtraSet stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/356545/cti", "name": "VDB-356545 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/792862", "name": "Submit #792862 | 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/9", "tags": ["exploit", "issue-tracking"]}, {"url": "https://www.tenda.com.cn/", "tags": ["product"]}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was found in Tenda F451 1.0.0.7. Affected by this issue is the function formWrlExtraSet of the file /goform/WrlExtraSet. The manipulation of the argument GO results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used."}], "id": "CVE-2026-5991", "lastModified": "2026-04-10T00:16:36.557", "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": "2026-04-10T00:16:36.557", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/Jimi-Lab/cve/issues/9"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/792862"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/356545"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/356545/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-121"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.0.0.7"}}], "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": "2026-04-10T02:52:49.663088+00:00", "value": {"mitigation_remediation": ["Apply the latest firmware update available for the Tenda F451 router.", "If a firmware update is not yet released, restrict external traffic to the /goform/WrlExtraSet interface using firewall rules.", "Configure the router\u2019s management interface to be accessible only from the internal network, blocking all remote access.", "Monitor network traffic for attempts to exploit the /goform/WrlExtraSet endpoint and apply any future patches as soon as they are distributed."], "summary": {"action": "Patch Immediately", "impact": "Stack-based buffer overflow that can lead to remote code execution"}, "threat_synthesis": {"affected_systems": "The flaw has been identified in Tenda F451 firmware version 1.0.0.7; no other firmware releases are currently reported to contain this issue in the CVE record. Devices running that firmware are affected.", "description_and_impact": "A stack-based buffer overflow occurs in the formWrlExtraSet function that processes requests to the /goform/WrlExtraSet endpoint on Tenda F451 routers. By manipulating the GO argument, an attacker can overflow a stack buffer, potentially corrupting control data and executing arbitrary code. The weakness is identified as uncontrolled buffer overrun (CWE\u2011119) and stack-based overflow (CWE\u2011121).", "risk_and_exploitability": "The CVSS score of 8.7 indicates high severity, and the description states that the attack can be launched remotely with publicly available exploit code. EPSS data is not available, and the vulnerability is not listed in the KEV catalog, but these omissions do not reduce the risk\u2014the vulnerability remains high and likely to be targeted on exposed routers."}}}}, "created": "2026-04-10T08:36:23.698737+00:00", "updated": "2026-04-10T09:27:23.604955+00:00", "vendors": ["tenda", "tenda$PRODUCT$f451"]}