CVE-2026-2186

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-2186", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-02-07T17:16:24.891Z", "datePublished": "2026-02-08T21:02:08.184Z", "dateUpdated": "2026-02-23T09:49:37.836Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-02-23T09:49:37.836Z"}, "title": "Tenda RX3 SetIpMacBind fromSetIpMacBind 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": "RX3", "versions": [{"version": "16.03.13.11", "status": "affected"}], "cpes": ["cpe:2.3:o:tenda:rx3_firmware:*:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in Tenda RX3 16.03.13.11. Impacted is the function fromSetIpMacBind of the file /goform/SetIpMacBind. Such manipulation of the argument list leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed to the public 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": "2026-02-07T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-02-07T01:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-02-09T01:15:32.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "LX-66-LX (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/?id.344889", "name": "VDB-344889 | Tenda RX3 SetIpMacBind fromSetIpMacBind stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/?ctiid.344889", "name": "VDB-344889 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/?submit.749718", "name": "Submit #749718 | Tenda RX3 V16.03.13.11 Stack-based Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://github.com/LX-66-LX/cve-new/issues/7", "tags": ["exploit", "issue-tracking"]}, {"url": "https://www.tenda.com.cn/", "tags": ["product"]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-02-09T21:08:17.361623Z", "id": "CVE-2026-2186", "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": "2026-02-09T21:08:28.920Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-2186", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-02-09T21:08:17.361623Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-09T21:08:22.347Z"}}], "cna": {"title": "Tenda RX3 SetIpMacBind fromSetIpMacBind stack-based overflow", "credits": [{"lang": "en", "type": "reporter", "value": "LX-66-LX (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:rx3_firmware:*:*:*:*:*:*:*:*"], "vendor": "Tenda", "product": "RX3", "versions": [{"status": "affected", "version": "16.03.13.11"}]}], "timeline": [{"lang": "en", "time": "2026-02-07T00:00:00.000Z", "value": "Advisory disclosed"}, {"lang": "en", "time": "2026-02-07T01:00:00.000Z", "value": "VulDB entry created"}, {"lang": "en", "time": "2026-02-09T01:15:32.000Z", "value": "VulDB entry last update"}], "references": [{"url": "https://vuldb.com/?id.344889", "name": "VDB-344889 | Tenda RX3 SetIpMacBind fromSetIpMacBind stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/?ctiid.344889", "name": "VDB-344889 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/?submit.749718", "name": "Submit #749718 | Tenda RX3 V16.03.13.11 Stack-based Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://github.com/LX-66-LX/cve-new/issues/7", "tags": ["exploit", "issue-tracking"]}, {"url": "https://www.tenda.com.cn/", "tags": ["product"]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in Tenda RX3 16.03.13.11. Impacted is the function fromSetIpMacBind of the file /goform/SetIpMacBind. Such manipulation of the argument list leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed to the public 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": "2026-02-23T09:49:37.836Z"}}}, "cveMetadata": {"cveId": "CVE-2026-2186", "state": "PUBLISHED", "dateUpdated": "2026-02-23T09:49:37.836Z", "dateReserved": "2026-02-07T17:16:24.891Z", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "datePublished": "2026-02-08T21:02:08.184Z", "assignerShortName": "VulDB"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:o:tenda:rx3_firmware:*:*:*:*:*:*:*:*"], "product": "RX3", "vendor": "Tenda", "versions": [{"status": "affected", "version": "16.03.13.11"}]}], "source": "cna@vuldb.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:tenda:rx3_firmware:16.03.13.11:*:*:*:*:*:*:*", "matchCriteriaId": "584AA720-0200-40C5-9BE4-80CFE253D0AF", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:tenda:rx3:-:*:*:*:*:*:*:*", "matchCriteriaId": "C6CB413F-F1C3-492C-B966-C6BEE5B9FCE2", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in Tenda RX3 16.03.13.11. Impacted is the function fromSetIpMacBind of the file /goform/SetIpMacBind. Such manipulation of the argument list leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed to the public and may be used."}, {"lang": "es", "value": "Una vulnerabilidad ha sido encontrada en Tenda RX3 16.03.13.11. Afectada es la funci\u00f3n fromSetIpMacBind del archivo /goform/SetIpMacBind. Dicha manipulaci\u00f3n de la lista de argumentos conduce a un desbordamiento de b\u00fafer basado en pila. El ataque puede ser realizado desde remoto. El exploit ha sido divulgado al p\u00fablico y puede ser usado."}], "id": "CVE-2026-2186", "lastModified": "2026-06-17T10:30:29.940", "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-2026-2186", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-02-09T21:08:17.361623Z", "version": "2.0.3"}}]}, "published": "2026-02-08T21:15:48.297", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Issue Tracking"], "url": "https://github.com/LX-66-LX/cve-new/issues/7"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.344889"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.344889"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.749718"}, {"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": "Secondary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-17T21:43:58.695448+00:00", "value": {"mitigation_remediation": ["Upgrade the router to a firmware version that addresses this stack\u2011buffer overflow.", "If an upgrade is unavailable, block or filter traffic to the /goform/SetIpMacBind endpoint using the router\u2019s firewall or an external ACL.", "Review and clean any unauthorized IP/MAC binding configurations, and restrict access to the configuration interface to trusted networks."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the Tenda RX3 model running firmware version 16.03.13.11. Users of this particular build should check the firmware version on their device and verify whether the router\u2019s SetIpMacBind interface is exposed.", "description_and_impact": "The firmware of certain Tenda RX3 routers contains a flaw in the fromSetIpMacBind function, which processes inputs sent to the /goform/SetIpMacBind endpoint. The user-controlled argument list can overflow a local stack buffer, a classic stack-based buffer overflow (CWE\u2011119) that may corrupt adjacent data including return addresses (CWE\u2011121). If successfully exploited, an attacker could inject and execute arbitrary code on the device, giving full control of the router.", "risk_and_exploitability": "The flaw carries a CVSS score of 8.7, indicating high severity, but its EPSS score is below 1\u202f%, meaning it is not yet widely observed in the wild. The attack can be launched from any remote location that can reach the router\u2019s web interface, and the exploit has already been publicly disclosed. Although the vulnerability is not yet listed in the CISA KEV catalog, the combination of remote accessibility and the potential for remote code execution warrants serious consideration."}}}}, "created": "2026-02-09T10:40:13.621871+00:00", "updated": "2026-04-17T21:45:28.645178+00:00", "vendors": ["tenda", "tenda$PRODUCT$rx3"]}