CVE-2026-11523

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-11523", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-06-07T16:06:42.495Z", "datePublished": "2026-06-08T14:45:09.883Z", "dateUpdated": "2026-06-08T16:36:03.017Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-06-08T14:45:09.883Z"}, "title": "Tenda W20E Web Management PortalAuth formPortalAuth 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": "W20E", "versions": [{"version": "15.11.0.6", "status": "affected"}], "cpes": ["cpe:2.3:o:tenda:w20e_firmware:*:*:*:*:*:*:*:*"], "modules": ["Web Management Interface"]}], "descriptions": [{"lang": "en", "value": "A flaw has been found in Tenda W20E 15.11.0.6. This issue affects the function formPortalAuth of the file /goform/PortalAuth of the component Web Management Interface. Executing a manipulation of the argument gotoUrl can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been published and may 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": "2026-06-07T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-06-07T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-06-07T18:11:50.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "hacker128 (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/369143", "name": "VDB-369143 | Tenda W20E Web Management PortalAuth formPortalAuth stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/369143/cti", "name": "VDB-369143 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-11523", "name": "CVE-2026-11523 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/836471", "name": "Submit #836471 | Tenda W20E Enterprise Router V15.11.0.6 Stack-based Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.md", "tags": ["exploit"]}, {"url": "https://www.tenda.com.cn/", "tags": ["product"]}]}, "adp": [{"references": [{"url": "https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.md", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-08T16:35:00.338505Z", "id": "CVE-2026-11523", "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": "2026-06-08T16:36:03.017Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-11523", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-06-08T16:35:00.338505Z"}}}], "references": [{"url": "https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.md", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-08T16:26:42.445Z"}}], "cna": {"title": "Tenda W20E Web Management PortalAuth formPortalAuth stack-based overflow", "credits": [{"lang": "en", "type": "reporter", "value": "hacker128 (VulDB User)"}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 8.7, "baseSeverity": "HIGH", "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"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 8.8, "baseSeverity": "HIGH", "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"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 8.8, "baseSeverity": "HIGH", "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"}}, {"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"}}], "affected": [{"cpes": ["cpe:2.3:o:tenda:w20e_firmware:*:*:*:*:*:*:*:*"], "vendor": "Tenda", "modules": ["Web Management Interface"], "product": "W20E", "versions": [{"status": "affected", "version": "15.11.0.6"}]}], "timeline": [{"lang": "en", "time": "2026-06-07T00:00:00.000Z", "value": "Advisory disclosed"}, {"lang": "en", "time": "2026-06-07T02:00:00.000Z", "value": "VulDB entry created"}, {"lang": "en", "time": "2026-06-07T18:11:50.000Z", "value": "VulDB entry last update"}], "references": [{"url": "https://vuldb.com/vuln/369143", "name": "VDB-369143 | Tenda W20E Web Management PortalAuth formPortalAuth stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/369143/cti", "name": "VDB-369143 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-11523", "name": "CVE-2026-11523 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/836471", "name": "Submit #836471 | Tenda W20E Enterprise Router V15.11.0.6 Stack-based Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.md", "tags": ["exploit"]}, {"url": "https://www.tenda.com.cn/", "tags": ["product"]}], "descriptions": [{"lang": "en", "value": "A flaw has been found in Tenda W20E 15.11.0.6. This issue affects the function formPortalAuth of the file /goform/PortalAuth of the component Web Management Interface. Executing a manipulation of the argument gotoUrl can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been published and may be used."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-121", "description": "Stack-based Buffer Overflow"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-119", "description": "Memory Corruption"}]}], "providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-06-08T14:45:09.883Z"}}}, "cveMetadata": {"cveId": "CVE-2026-11523", "state": "PUBLISHED", "dateUpdated": "2026-06-08T16:36:03.017Z", "dateReserved": "2026-06-07T16:06:42.495Z", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "datePublished": "2026-06-08T14:45:09.883Z", "assignerShortName": "VulDB"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:o:tenda:w20e_firmware:*:*:*:*:*:*:*:*"], "modules": ["Web Management Interface"], "product": "W20E", "vendor": "Tenda", "versions": [{"status": "affected", "version": "15.11.0.6"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw has been found in Tenda W20E 15.11.0.6. This issue affects the function formPortalAuth of the file /goform/PortalAuth of the component Web Management Interface. Executing a manipulation of the argument gotoUrl can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been published and may be used."}, {"lang": "es", "value": "Se ha encontrado una falla en Tenda W20E 15.11.0.6. Este problema afecta a la funci\u00f3n formPortalAuth del archivo /goform/PortalAuth del componente Interfaz de Gesti\u00f3n Web. La ejecuci\u00f3n de una manipulaci\u00f3n del argumento gotoUrl puede llevar a un desbordamiento de b\u00fafer basado en pila. El ataque puede ser lanzado remotamente. El exploit ha sido publicado y puede ser utilizado."}], "id": "CVE-2026-11523", "lastModified": "2026-07-23T07:10:00.113", "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-2026-11523", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-06-08T16:35:00.338505Z", "version": "2.0.3"}}]}, "published": "2026-06-08T16:16:37.113", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.md"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-11523"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/836471"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/369143"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/369143/cti"}, {"source": "cna@vuldb.com", "url": "https://www.tenda.com.cn/"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.md"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-121"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "15.11.0.6"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "W20E", "source": "cna", "vendor": "Tenda"}, "product": "w20e", "vendor": "tenda"}], "created": "2026-06-08T16:30:06.159106+00:00", "updated": "2026-06-08T17:00:16.995246+00:00", "vendors": ["tenda", "tenda$PRODUCT$w20e"]}