{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-15579","assignerOrgId":"2e0a0ee2-d866-482a-9f5e-ac03d156dbaa","state":"PUBLISHED","assignerShortName":"Moxa","dateReserved":"2026-07-13T09:51:45.547Z","datePublished":"2026-09-18T09:32:59.993Z","dateUpdated":"2026-09-18T10:39:14.140Z"},"containers":{"cna":{"providerMetadata":{"orgId":"2e0a0ee2-d866-482a-9f5e-ac03d156dbaa","shortName":"Moxa","dateUpdated":"2026-09-18T09:32:59.993Z"},"problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-24","descriptions":[{"lang":"en","value":"CAPEC-24: Filter Failure through Buffer Overflow"}]}],"affected":[{"vendor":"Moxa","product":"TN-4500B Series","versions":[{"status":"affected","version":"1.0","lessThanOrEqual":"2.0","versionType":"custom"},{"status":"unaffected","version":"2.1","versionType":"custom"}],"defaultStatus":"unaffected"}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:moxa:tn-4500b_series:*:*:*:*:*:*:*:*","versionStartIncluding":"1.0","versionEndIncluding":"2.0"},{"vulnerable":false,"criteria":"cpe:2.3:a:moxa:tn-4500b_series:2.1:*:*:*:*:*:*:*"}]}]}],"descriptions":[{"lang":"en","value":"An out-of-bounds write vulnerability exists in some of the Ethernet switches because of improper validation of the username field length during Web login processing. This may allow a remote attacker to submit a specially crafted overly long input, triggering a buffer overflow that can cause the authentication process to crash and result in a Denial of Service (DoS) attack.","supportingMedia":[{"type":"text/html","base64":false,"value":"An out-of-bounds write vulnerability exists in some of the Ethernet switches because of improper validation of the username field length during Web login processing. This may allow a remote attacker to submit a specially crafted overly long input, triggering a buffer overflow that can cause the authentication process to crash and result in a Denial of Service (DoS) attack."}]}],"references":[{"url":"https://www.moxa.com/en/support/product-support/security-advisory/mpsa-252620-cve-2026-15579-out-of-bounds-write-vulnerability-in-ethernet-switch","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","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":"HIGH","baseScore":8.8,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N"}}],"solutions":[{"lang":"en","value":"Refer to Moxa's security advisory: https://www.moxa.com/en/support/product-support/security-advisory/mpsa-252620-cve-2026-15579-out-of-bounds-write-vulnerability-in-ethernet-switch","supportingMedia":[{"type":"text/html","base64":false,"value":"Refer to Moxa's security advisory: https://www.moxa.com/en/support/product-support/security-advisory/mpsa-252620-cve-2026-15579-out-of-bounds-write-vulnerability-in-ethernet-switch "}]}],"credits":[{"lang":"en","value":"Mask Lu","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-18T10:38:44.190582Z","id":"CVE-2026-15579","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-18T10:39:14.140Z"}}]}}