Administrative access via password hash cookie leakage
Published Nov 7, 2024 · Updated Nov 4, 2025
Information disclosure in the Brother MFC-J491DW C1806180757 web panel allows remote attackers to retrieve its administrator password hash. A failed login response exposes an incomplete authorization cookie whose hexadecimal value can be reconstructed as the administrator password's MD5 hash. Network access to TCP port 80 is sufficient, enabling offline password cracking and subsequent administrative access.
Summary
What happened
Information disclosure in the Brother MFC-J491DW C1806180757 web panel allows remote attackers to retrieve its administrator password hash. A failed login response exposes an incomplete authorization cookie whose hexadecimal value can be reconstructed as the administrator password's MD5 hash. Network access to TCP port 80 is sufficient, enabling offline password cracking and subsequent administrative access.
The record
- CVE
- CVE-2019-20457
- Published
- Nov 7, 2024
- Updated
- Nov 4, 2025
- Vendor
- Brother Industries, Ltd.
- Product
- MFC-J491DW
- Classifications
- CWE-276, T1110.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 7, 2024CVE publishedPublication date reported by the CVE source.
- Nov 4, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=MFC-J491DW_C1806180757
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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