{"id":"CVE-2026-86325","state":"PUBLISHED","title":"A stack-based buffer overflow vulnerability exists in protocol gateways' account management interface. The vulnerability is caused by insufficient length validation of the `account","description":"A stack-based buffer overflow vulnerability exists in protocol gateways' account management interface. The vulnerability is caused by insufficient length validation of the `account_name` parameter when processing account management requests. An attacker authenticated as a read-only user to the web management interface could supply a specially crafted account name that exceeds the size of the internal stack buffer, resulting in corruption of program execution flow. Successful exploitation could allow an attacker to read sensitive information from device memory, including credentials, modify arbitrary memory contents, and disrupt device availability.","publishedAt":"2026-10-02T10:18:29.907Z","updatedAt":"2026-10-02T10:49:43.686Z","severity":{"score":9.4,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","source":"Moxa"},"assigner":"Moxa","products":["Moxa MGate MB3170 Series","Moxa MGate MB3270 Series"],"affected":[{"vendor":"Moxa","product":"MGate MB3170 Series","defaultStatus":"unaffected","versions":[{"version":"1.0","status":"affected","lessThanOrEqual":"4.7","versionType":"custom"}]},{"vendor":"Moxa","product":"MGate MB3270 Series","defaultStatus":"unaffected","versions":[{"version":"1.0","status":"affected","lessThanOrEqual":"4.7","versionType":"custom"}]}],"references":["https://www.moxa.com/en/support/product-support/security-advisory/mpsa-269540-cve-2026-86325,-cve-2026-86326-two-vulnerabilities-in-protocol-gateways"],"weaknesses":["CWE-121"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/86xxx/CVE-2026-86325.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-86325","state":"PUBLISHED","datePublished":"2026-10-02T10:18:29.907Z","dateUpdated":"2026-10-02T10:49:43.686Z","assignerShortName":"Moxa","assignerOrgId":"2e0a0ee2-d866-482a-9f5e-ac03d156dbaa","dateReserved":"2026-09-07T06:34:02.910Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A stack-based buffer overflow vulnerability exists in protocol gateways' account management interface. The vulnerability is caused by insufficient length validation of the `account_name` parameter when processing account management requests. An attacker authenticated as a read-only user to the web management interface could supply a specially crafted account name that exceeds the size of the internal stack buffer, resulting in corruption of program execution flow. Successful exploitation could allow an attacker to read sensitive information from device memory, including credentials, modify arbitrary memory contents, and disrupt device availability."}],"affected":[{"vendor":"Moxa","product":"MGate MB3170 Series","defaultStatus":"unaffected","versions":[{"version":"1.0","status":"affected","lessThanOrEqual":"4.7","versionType":"custom"}]},{"vendor":"Moxa","product":"MGate MB3270 Series","defaultStatus":"unaffected","versions":[{"version":"1.0","status":"affected","lessThanOrEqual":"4.7","versionType":"custom"}]}],"references":[{"url":"https://www.moxa.com/en/support/product-support/security-advisory/mpsa-269540-cve-2026-86325,-cve-2026-86326-two-vulnerabilities-in-protocol-gateways","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"HIGH","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":"CRITICAL","baseScore":9.4,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","lang":"en","description":"CWE-121: Stack-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"Moxa","orgId":"2e0a0ee2-d866-482a-9f5e-ac03d156dbaa","dateUpdated":"2026-10-02T10:18:29.907Z"},"impacts":[{"capecId":"CAPEC-24","descriptions":[{"lang":"en","value":"CAPEC-24: Filter Failure through Buffer Overflow"}]}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:moxa:mgate_mb3170_series:*:*:*:*:*:*:*:*","versionStartIncluding":"1.0","versionEndIncluding":"4.7"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:moxa:mgate_mb3270_series:*:*:*:*:*:*:*:*","versionStartIncluding":"1.0","versionEndIncluding":"4.7"}]}]}],"solutions":[{"lang":"en","value":"Moxa has developed appropriate solutions to address the vulnerability: https://www.moxa.com/en/support/product-support/security-advisory/mpsa-269540-cve-2026-86325,-cve-2026-86326-two-vulnerabilities-in-protocol-gateways","supportingMedia":[{"type":"text/html","base64":false,"value":"Moxa has developed appropriate solutions to address the vulnerability: https://www.moxa.com/en/support/product-support/security-advisory/mpsa-269540-cve-2026-86325,-cve-2026-86326-two-vulnerabilities-in-protocol-gateways"}]}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-02T10:49:27.817598Z","id":"CVE-2026-86325","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-02T10:49:43.686Z"}}]}}}