Man-in-the-Middle Vulnerability in Brother Industries Multi-Function Printers
CVE-2025-53869

6.3MEDIUM

Key Information:

Vendor

Brother Industries, Ltd.

Status
Multiple Mfps
Vendor
CVE Published:
29 January 2026

What is CVE-2025-53869?

Certain multi-function printers from Brother Industries, Ltd. exhibit a flaw in their server certificate validation process. This vulnerability could allow a skilled attacker to replace the legitimate root certificates with malicious ones. Consequently, this might facilitate man-in-the-middle attacks, which could jeopardize the confidentiality and integrity of sensitive information being processed by the device. It is crucial for users to be aware of this issue and apply necessary mitigations as recommended by the vendor to secure their external communications.

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Deploy the Patch

Affected Version(s)

Multiple MFPs see the information provided by the vendor

Multiple MFPs see the information provided by the vendor

Multiple MFPs see the information provided by the vendor

References

https://faq.brother.co.jp/app/answers/detail/a_id/13716
https://www.konicaminolta.com/global-en/security/advisory...
https://www.ricoh.com/products/security/vulnerabilities/v...

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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