VDB-343336 · CVE-2025-55704 · EUVD-2025-206537

Brother Industries/Konica Minolta MFP backdoor

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in Brother Industries/Konica Minolta MFP. This issue affects some unknown processing. Executing a manipulation can lead to backdoor. This vulnerability is handled as CVE-2025-55704. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Brother Industries/Konica Minolta MFP (version unknown) and classified as critical. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a backdoor vulnerability. The CWE definition for the vulnerability is CWE-912. The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators. As an impact it is known to affect confidentiality. CVE summarizes:

Hidden functionality issue exists in multiple MFPs provided by Brother Industries, Ltd., which may allow an attacker to obtain the logs of the affected product and obtain sensitive information within the logs.

The advisory is shared for download at faq.brother.co.jp. This vulnerability was named CVE-2025-55704 since 11/19/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/01/2026). The MITRE ATT&CK project declares the attack technique as T1588.001.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202601-4962) and EUVD (EUVD-2025-206537). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (jpcert): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Backdoor
CWE: CWE-912
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/19/2025 CVE reserved
01/29/2026 +71 days Advisory disclosed
01/29/2026 +0 days VulDB entry created
02/01/2026 +3 days VulDB entry last update

Sourcesinfo

Advisory: faq.brother.co.jp
Status: Not defined

CVE: CVE-2025-55704 (🔒)
GCVE (CVE): GCVE-0-2025-55704
GCVE (VulDB): GCVE-100-343336
EUVD: 🔒
CNNVD: CNNVD-202601-4962 - Brother Industries Brother MFPs 安全漏洞

Entryinfo

Created: 01/29/2026 06:33
Updated: 02/01/2026 15:13
Changes: 01/29/2026 06:33 (72), 01/30/2026 03:33 (1), 01/30/2026 15:57 (6), 01/31/2026 20:13 (1), 02/01/2026 15:13 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.