AUGUST 4, 2026
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Case File

CVE-2019-20457

CRITICAL · CVSS 9.1 EPSS 0.73%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2024-11-07 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. See the original NVD description below for full technical details.

CVE
CVE-2019-20457
Severity
CRITICAL
CVSS
9.1
EPSS
0.73%

Original NVD 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.