{"id":"CVE-2019-20457","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-20457","generatedAt":"2026-10-27T23:42:56.298Z","title":"An attacker can easily derive the true MD5 hash from this, and use offline cracking attacks to obtain administrative access to the device.","description":"An issue was discovered on Brother MFC-J491DW C1806180757 devices. The printer's web-interface password hash can be retrieved without authentication, because the response header of any failed login attempt returns an incomplete authorization cookie. The value of the authorization cookie is the MD5 hash of the password in hexadecimal. An attacker can easily derive the true MD5 hash from this, and use offline cracking attacks to obtain administrative access to the device.","published":"2024-11-07T18:15:15.000Z","lastModified":"2026-06-17T02:30:29.000Z","status":"Deferred","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-276"],"affected":[],"epss":{"score":0.00744,"percentile":0.54494,"date":"2026-10-26","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 (0.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://global.brother","source":"cve@mitre.org"},{"url":"https://seclists.org/fulldisclosure/2024/Jul/14","source":"cve@mitre.org"},{"url":"https://support.brother.com/g/s/security/en/index.html","source":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2024/Jul/14","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-20457","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."}