{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-4906", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-03-26T15:58:03.744Z", "datePublished": "2026-03-27T00:53:09.317Z", "dateUpdated": "2026-03-30T11:56:56.348Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-03-27T00:53:09.317Z"}, "title": "Tenda AC5 POST Request WizardHandle decodePwd 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": "AC5", "versions": [{"version": "15.03.06.47", "status": "affected"}], "cpes": ["cpe:2.3:o:tenda:ac5_firmware:*:*:*:*:*:*:*:*"], "modules": ["POST Request Handler"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in Tenda AC5 15.03.06.47. The affected element is the function decodePwd of the file /goform/WizardHandle of the component POST Request Handler. Executing a manipulation of the argument WANT/WANS can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized."}], "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": "2026-03-26T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-03-26T01:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-03-26T17:03:17.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "wxhwxhwxh_mie (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/?id.353657", "name": "VDB-353657 | Tenda AC5 POST Request WizardHandle decodePwd stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/?ctiid.353657", "name": "VDB-353657 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/?submit.777394", "name": "Submit #777394 | Tenda AC5 AC5 V1.0 V15.03.06.47 Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://lavender-bicycle-a5a.notion.site/Tenda_AC5_WizardHandle_PPW-32053a41781f80cab094d750d30dc9a8?source=copy_link", "tags": ["exploit"]}, {"url": "https://www.tenda.com.cn/", "tags": ["product"]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-30T11:56:35.616646Z", "id": "CVE-2026-4906", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-30T11:56:56.348Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:tenda:ac5_firmware:15.03.06.47:*:*:*:*:*:*:*", "matchCriteriaId": "2D94CA12-3FED-4730-B1B4-4F6AAA3AB17E", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:tenda:ac5:1.0:*:*:*:*:*:*:*", "matchCriteriaId": "D141716B-56F0-4061-9D87-943B7858F2F4", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in Tenda AC5 15.03.06.47. The affected element is the function decodePwd of the file /goform/WizardHandle of the component POST Request Handler. Executing a manipulation of the argument WANT/WANS can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized."}, {"lang": "es", "value": "Se determin\u00f3 una vulnerabilidad en Tenda AC5 15.03.06.47. El elemento afectado es la funci\u00f3n decodePwd del archivo /goform/WizardHandle del componente Gestor de Solicitudes POST. La ejecuci\u00f3n de una manipulaci\u00f3n del argumento WANT/WANS puede conducir a un desbordamiento de b\u00fafer basado en pila. El ataque puede ser ejecutado de forma remota. El exploit ha sido divulgado p\u00fablicamente y puede ser utilizado."}], "id": "CVE-2026-4906", "lastModified": "2026-03-31T20:58:38.367", "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": "2026-03-27T01:16:21.807", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://lavender-bicycle-a5a.notion.site/Tenda_AC5_WizardHandle_PPW-32053a41781f80cab094d750d30dc9a8?source=copy_link"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.353657"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.353657"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.777394"}, {"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://www.tenda.com.cn/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-121"}], "source": "cna@vuldb.com", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "15.03.06.47"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "AC5", "source": "cna", "vendor": "Tenda"}, "product": "ac5", "vendor": "tenda"}], "analysis": {"en": {"generated_at": "2026-04-01T06:45:32.397773+00:00", "value": {"mitigation_remediation": ["Check Tenda\u2019s official website or support portal for the latest firmware release that fixes the stack\u2011based overflow vulnerability.", "Update the device to the patched firmware as soon as it becomes available.", "If no patch is available, restrict or disable external access to the /goform/WizardHandle endpoint via firewall or access control lists.", "Ensure that all management interfaces are protected with strong authentication and, if possible, restrict administrative access to trusted IP ranges."], "summary": {"action": "Immediate Patch", "impact": "Remote code execution via stack-based buffer overflow"}, "threat_synthesis": {"affected_systems": "The flaw affects Tenda AC5 routers, specifically firmware revision 15.03.06.47. The vulnerable endpoint is /goform/WizardHandle, which processes HTTP POST requests from clients authorized to manage the device. Devices running earlier firmware builds may be affected until a patch is applied.", "description_and_impact": "Tenda AC5 firmware version 15.03.06.47 contains a stack-based buffer overflow in the decodePwd function, located in the /goform/WizardHandle POST request handler. An attacker can send a specially crafted POST request containing a manipulated WANT/WANS argument, causing the overflow and potentially allowing arbitrary code execution on the device. The vulnerability is a classic stack corruption flaw commonly linked to CWEs 119, 121, and 787.", "risk_and_exploitability": "The CVSS score of 8.7 indicates high severity, and the EPSS score of less than 1% suggests low overall exploitation probability, though the vulnerability has been publicly disclosed and could be leveraged by well\u2011equipped adversaries. The attack vector is remote, requiring network access to the router\u2019s management interface to execute the malicious POST request. No CISA KEV listing is present, but the presence of a stack overflow and remote trigger warrants respect for potential exploitation."}}}}, "created": "2026-03-27T08:31:02.369616+00:00", "updated": "2026-04-02T07:55:46.210430+00:00", "vendors": ["tenda", "tenda$PRODUCT$ac5"]}