{"id":"CVE-2018-11421","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-11421","generatedAt":"2026-10-28T20:25:45.297Z","title":"The protocol is vulnerable to remote unauthenticated disclosure of sensitive information, including the administrator's password.","description":"Moxa OnCell G3100-HSPA Series version 1.6 Build 17100315 and prior use a proprietary monitoring protocol that does not provide confidentiality, integrity, and authenticity security controls. All information is sent in plain text, and can be intercepted and modified. The protocol is vulnerable to remote unauthenticated disclosure of sensitive information, including the administrator's password. Under certain conditions, it's also possible to retrieve additional information, such as content of HTTP requests to the device, or the previously used password, due to memory leakages.","published":"2019-07-03T16:15:10.000Z","lastModified":"2026-06-17T01:35:54.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-319"],"affected":["moxa/oncell g3150-hspa firmware","moxa/oncell g3150-hspa-t firmware"],"epss":{"score":0.00906,"percentile":0.59669,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.91%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/klsecservices/Advisories/blob/master/KL-MOXA-2018-103.md","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/klsecservices/Advisories/blob/master/KL-MOXA-2018-103.md","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-11421","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}