{"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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{"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": "2026-03-30T13:26:29.793", "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": "[email protected]", "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": "[email protected]", "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": "[email protected]", "type": "Secondary"}]}, "published": "2026-03-27T01:16:21.807", "references": [{"source": "[email protected]", "url": "https://lavender-bicycle-a5a.notion.site/Tenda_AC5_WizardHandle_PPW-32053a41781f80cab094d750d30dc9a8?source=copy_link"}, {"source": "[email protected]", "url": "https://vuldb.com/?ctiid.353657"}, {"source": "[email protected]", "url": "https://vuldb.com/?id.353657"}, {"source": "[email protected]", "url": "https://vuldb.com/?submit.777394"}, {"source": "[email protected]", "url": "https://www.tenda.com.cn/"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-121"}], "source": "[email protected]", "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": "2026-03-27T06:36:05.696899+00:00", "value": {"mitigation_remediation": ["Upgrade the router to the latest firmware version that patches the decodePwd stack overflow in the /goform/WizardHandle handler.", "If a patch is unavailable, contact Tenda support for further guidance or an interim fix.", "Block or disable the /goform/WizardHandle POST endpoint to prevent the vulnerable request from being processed.", "Monitor the device for abnormal traffic or signs of exploitation until a patch can be applied."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerability affects Tenda AC5 routers running firmware version 15.03.06.47. The flaw resides in the ac5_firmware component, meaning all units with this firmware are at risk until a patch that removes the stack\u2011overflow in decodePwd is deployed.", "description_and_impact": "A stack\u2011based buffer overflow has been found in the decodePwd function of the /goform/WizardHandle POST request handler on Tenda AC5 routers. The flaw is triggered by manipulating the WANT/WANS parameter and can be invoked from a remote attacker. If successfully exploited, the overflow could corrupt stack data and lead to arbitrary code execution or other destructive actions on the device.", "risk_and_exploitability": "The CVSS score of 8.7 categorizes the issue as high severity. EPSS information is not available, and the flaw is not listed in the CISA KEV catalog, yet it has been publicly disclosed and the description confirms that remote exploitation is possible. While no specific exploit code is published, a determined attacker could achieve remote code execution by triggering the buffer overflow."}}}}, "created": "2026-03-27T08:31:02.369616+00:00", "updated": "2026-03-27T09:22:24.800328+00:00", "vendors": ["tenda", "tenda$PRODUCT$ac5"]}