{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-12495","assignerOrgId":"0cbda920-cd7f-484a-8e76-bf7f4b7f4516","state":"PUBLISHED","assignerShortName":"INCIBE","dateReserved":"2026-06-17T08:53:55.157Z","datePublished":"2026-07-27T10:32:19.167Z","dateUpdated":"2026-07-28T06:49:36.326Z"},"containers":{"cna":{"providerMetadata":{"orgId":"0cbda920-cd7f-484a-8e76-bf7f4b7f4516","shortName":"INCIBE","dateUpdated":"2026-07-28T06:49:36.326Z"},"title":"Stack-Based Buffer Overflow in the Mercusys MB115-4G","datePublic":"2026-07-27T10:17:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-121","description":"CWE-121 Stack-based buffer overflow","type":"CWE"}]}],"affected":[{"vendor":"Mercusys","product":"MB115-4G","versions":[{"status":"affected","version":"1.7.0","lessThanOrEqual":"1.9.0","versionType":"custom"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"Denial-of-service (DoS) vulnerability due to a stack buffer overflow in the http_gdpr_decrypt function of the Mercusys MB115-4G device's web interface. An unauthenticated attacker could exploit this vulnerability by sending a specially crafted request to the /cgi/login endpoint, causing memory corruption and the httpd process to crash, resulting in a denial of service for the web administration service.","supportingMedia":[{"type":"text/html","base64":false,"value":"Denial-of-service (DoS) vulnerability due to a stack buffer overflow in the http_gdpr_decrypt function of the Mercusys MB115-4G device's web interface. An unauthenticated attacker could exploit this vulnerability by sending a specially crafted request to the /cgi/login endpoint, causing memory corruption and the httpd process to crash, resulting in a denial of service for the web administration service."}]}],"references":[{"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/stack-based-buffer-overflow-mercusys-mb115-4g","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"ADJACENT","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":5.3,"vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}}],"solutions":[{"lang":"en","value":"The vulnerability has been fixed by the Mercusys team in version V1_1.9.0.","supportingMedia":[{"type":"text/html","base64":false,"value":"The vulnerability has been fixed by the Mercusys team in version V1_1.9.0."}]}],"credits":[{"lang":"en","value":"Héctor Villar Palacios","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.4"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-27T14:40:38.739030Z","id":"CVE-2026-12495","options":[{"Exploitation":"none"},{"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":"2026-07-27T14:40:50.557Z"}}]}}