{"affected":[{"affectedData":[{"product":"WinBox","vendor":"MikroTik","versions":[{"status":"affected","version":"Winbox 3.20 and below."}]}],"source":"vulnreport@tenable.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:mikrotik:routeros:*:*:*:*:-:*:*:*","matchCriteriaId":"132324AA-4B0A-4359-B2FF-3566D758A379","versionEndExcluding":"6.43","vulnerable":true},{"criteria":"cpe:2.3:o:mikrotik:winbox:*:*:*:*:*:*:*:*","matchCriteriaId":"D5DE5DC0-7B03-4115-9A6C-C7E34034601B","versionEndExcluding":"3.20","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"MikroTik Winbox 3.20 and below is vulnerable to man in the middle attacks. A man in the middle can downgrade the client's authentication protocol and recover the user's username and MD5 hashed password."},{"lang":"es","value":"MikroTik Winbox versión 3.20 y por debajo, es vulnerable a ataque de tipo man in the middle. Un ataque de tipo man in the middle puede degradar el protocolo de autenticación del cliente y recuperar el nombre de usuario y el contraseña con hash MD5."}],"id":"CVE-2019-3981","lastModified":"2026-06-17T02:35:59.523","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"MEDIUM","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"NONE","baseScore":4.3,"confidentialityImpact":"PARTIAL","integrityImpact":"NONE","vectorString":"AV:N/AC:M/Au:N/C:P/I:N/A:N","version":"2.0"},"exploitabilityScore":8.6,"impactScore":2.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"exploitabilityScore":2.2,"impactScore":1.4,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2020-01-14T19:15:13.187","references":[{"source":"vulnreport@tenable.com","tags":["Exploit","Third Party Advisory"],"url":"https://www.tenable.com/security/research/tra-2020-01"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"],"url":"https://www.tenable.com/security/research/tra-2020-01"}],"sourceIdentifier":"vulnreport@tenable.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-300"}],"source":"vulnreport@tenable.com","type":"Secondary"},{"description":[{"lang":"en","value":"NVD-CWE-Other"}],"source":"nvd@nist.gov","type":"Primary"}]}