CVE-2026-4182

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{"affected": [{"affectedData": [{"modules": ["goahead"], "product": "DIR-816", "vendor": "D-Link", "versions": [{"status": "affected", "version": "1.10CNB05"}]}], "source": "cna@vuldb.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:dlink:dir-816_firmware:1.10cnb05:*:*:*:*:*:*:*", "matchCriteriaId": "6A221E99-E2B0-4C57-9263-9A86EFF8746E", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:dlink:dir-816:-:*:*:*:*:*:*:*", "matchCriteriaId": "B54058C1-B58F-434A-ABF0-A6B314A1AB14", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [{"sourceIdentifier": "cna@vuldb.com", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "A weakness has been identified in D-Link DIR-816 1.10CNB05. This impacts an unknown function of the file /goform/form2Wl5RepeaterStep2.cgi of the component goahead. This manipulation of the argument key1/key2/key3/key4/pskValue causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. This vulnerability only affects products that are no longer supported by the maintainer."}, {"lang": "es", "value": "Se ha identificado una debilidad en D-Link DIR-816 1.10CNB05. Esto afecta a una funci\u00f3n desconocida del archivo /goform/form2Wl5RepeaterStep2.cgi del componente goahead. Esta manipulaci\u00f3n del argumento key1/key2/key3/key4/pskValue causa desbordamiento de b\u00fafer basado en pila. La explotaci\u00f3n remota del ataque es posible. El exploit se ha puesto a disposici\u00f3n del p\u00fablico y podr\u00eda ser utilizado para ataques. Esta vulnerabilidad solo afecta a productos que ya no reciben soporte por parte del mantenedor."}], "id": "CVE-2026-4182", "lastModified": "2026-06-17T10:56:07.870", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 10.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "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": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "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": 8.9, "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": "NONE", "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:N/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-2026-4182", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-16T14:34:59.713248Z", "version": "2.0.3"}}]}, "published": "2026-03-16T14:19:59.017", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_86/86.md"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.351086"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.351086"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.769830"}, {"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://www.dlink.com/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-121"}], "source": "cna@vuldb.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.10CNB05"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DIR-816", "source": "cna", "vendor": "D-Link"}, "product": "dir-816", "vendor": "d-link"}], "analysis": {"en": {"generated_at": "2026-03-19T21:26:16.601110+00:00", "value": {"mitigation_remediation": ["Update the router firmware to a version that removes the vulnerable code", "Disable remote web administration or block external access to /goform/form2Wl5RepeaterStep2.cgi", "Configure firewall rules to restrict access to the vulnerable URL to trusted internal IP ranges only", "Monitor router logs for suspicious activity targeting the vulnerable endpoint", "Contact D\u2011Link support for guidance if an update is not immediately available"], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerable product is D\u2011Link DIR\u2011816 running firmware version 1.10CNB05. No other versions or products are listed in the CNA data. The vulnerability is limited to revisions that are no longer supported by the maintainer.", "description_and_impact": "A stack-based buffer overflow exists in the D\u2011Link DIR\u2011816 1.10CNB05 firmware in the file /goform/form2Wl5RepeaterStep2.cgi of the goahead component. Manipulation of the arguments key1, key2, key3, key4, and pskValue can overflow a stack buffer, providing an attacker with the potential to inject and execute arbitrary code. The vulnerability is reported as exploitable remotely, meaning an attacker can trigger the overflow over the network without local access. The primary impact is the compromise of confidentiality, integrity, and availability of the affected device, potentially allowing full remote takeover of the router.", "risk_and_exploitability": "The CVSS score is 9.3, indicating critical severity. Although the EPSS score is less than 1%, indicating low probability of exploitation in the general population, the vulnerability is publicly available and could be used in targeted attacks. It is not listed in the CISA KEV catalog. The likely attack vector is remote network access via the router\u2019s web interface to the vulnerable CGI endpoint."}}}}, "created": "2026-03-16T09:21:30.937392+00:00", "updated": "2026-03-23T14:01:38.794594+00:00", "vendors": ["d-link", "d-link$PRODUCT$dir-816"]}