CVE-2025-55704 is a medium-severity vulnerability affecting multiple Brother Industries MFPs, involving hidden functionality that allows attackers to access device logs containing sensitive information. The flaw can be exploited remotely without authentication or user interaction, potentially exposing confidential data stored in logs. Although no known exploits are currently in the wild, the vulnerability's network accessibility and low attack complexity pose a risk to organizations using affected devices. European organizations relying on Brother MFPs for document management and printing could face information disclosure risks, impacting privacy and compliance. Mitigation requires vendor patches once available and restricting network access to MFP management interfaces. Countries with high adoption of Brother MFPs in critical sectors, such as Germany, France, and the UK, are most likely to be affected. Due to the limited impact on integrity and availability, and no authentication required, the severity is medium. Defenders should prioritize monitoring network access to MFPs and prepare for patch deployment to reduce exposure.
CVE-2025-53869 is a vulnerability in multiple Brother Industries MFP devices where improper server certificate validation allows a man-in-the-middle attacker to replace the device's root certificate store with arbitrary certificates. This flaw does not impact confidentiality or availability directly but can lead to integrity issues by enabling attackers to intercept or manipulate communications. The vulnerability has a CVSS score of 3.7 (low severity) due to the high attack complexity and lack of authentication or user interaction requirements. No known exploits are currently reported in the wild. European organizations using affected Brother MFPs should be aware of this risk, especially those in sectors with sensitive document handling. Mitigation involves applying vendor patches once available and restricting network access to MFP management interfaces. Countries with high Brother MFP market penetration and strong reliance on secure document workflows, such as Germany, France, and the UK, are most likely to be impacted.
Android App "Brother iPrint&Scan" versions 6.13.7 and earlier improperly uses an external cache directory. If exploited, application-specific files may be accessed from other malicious applications.
By using the "uscan" protocol provided by the eSCL specification, an attacker can discover the serial number of multi-function printers that implement the Brother-provided firmware. This serial number can, in turn, can be leveraged by the flaw described by CVE-2024-51978 to calculate the default administrator password. This flaw is similar to CVE-2024-51977, with the only difference being the protocol by which an attacker can use to learn the remote device's serial number. The eSCL/uscan vector is typically only exposed on the local network. Any discovery service that implements the eSCL specification can be used to exploit this vulnerability, and one such implementation is the runZero Explorer. Changing the default administrator password will render this vulnerability virtually worthless, since the calculated default administrator password would no longer be the correct password.
Multiple Brother driver installers for Windows contain a privilege escalation vulnerability. If exploited, an arbitrary program may be executed with the administrative privilege. As for the details of affected product names, model numbers, and versions, refer to the information provided by the respective vendors listed under [References].
An authenticated attacker can reconfigure the target device to use an external service (such as LDAP or FTP) controlled by the attacker. If an existing password is present for an external service, the attacker can force the target device to authenticate to an attacker controlled device using the existing credentials for that external service. In the case of an external LDAP or FTP service, this will disclose the plaintext password for that external service to the attacker.
An unauthenticated attacker who can connect to the Web Services feature (HTTP TCP port 80) can issue a WS-Scan SOAP request containing an unexpected JobToken value which will crash the target device. The device will reboot, after which the attacker can reissue the command to repeatedly crash the device.
CVE-2024-51982 is a high-severity vulnerability affecting the Brother HL-L8260CDN printer. An unauthenticated attacker able to connect to TCP port 9100 can send a malformed Printer Job Language (PJL) command with a non-numeric FORMLINES variable, causing the device to crash and reboot. This can be repeatedly exploited to cause denial of service. There is no information about an available patch or official remediation at this time.
An unauthenticated attacker may perform a blind server side request forgery (SSRF), due to a CLRF injection issue that can be leveraged to perform HTTP request smuggling. This SSRF leverages the WS-Addressing feature used during a WS-Eventing subscription SOAP operation. The attacker can control all the HTTP data sent in the SSRF connection, but the attacker can not receive any data back from this connection.
An unauthenticated attacker may perform a limited server side request forgery (SSRF), forcing the target device to open a TCP connection to an arbitrary port number on an arbitrary IP address. This SSRF leverages the WS-Addressing ReplyTo element in a Web service (HTTP TCP port 80) SOAP request. The attacker can not control the data sent in the SSRF connection, nor can the attacker receive any data back. This SSRF is suitable for TCP port scanning of an internal network when the Web service (HTTP TCP port 80) is exposed across a network segment.
An authenticated attacker may trigger a stack based buffer overflow by performing a malformed request to either the HTTP service (TCP port 80), the HTTPS service (TCP port 443), or the IPP service (TCP port 631). The malformed request will contain an empty Origin header value and a malformed Referer header value. The Referer header value will trigger a stack based buffer overflow when the host value in the Referer header is processed and is greater than 64 bytes in length.
An unauthenticated attacker who knows the target device's serial number, can generate the default administrator password for the device. An unauthenticated attacker can first discover the target device's serial number via CVE-2024-51977 over HTTP/HTTPS/IPP, or via a PJL request, or via an SNMP request.
An unauthenticated attacker who can access either the HTTP service (TCP port 80), the HTTPS service (TCP port 443), or the IPP service (TCP port 631), can leak several pieces of sensitive information from a vulnerable device. The URI path /etc/mnt_info.csv can be accessed via a GET request and no authentication is required. The returned result is a comma separated value (CSV) table of information. The leaked information includes the device’s model, firmware version, IP address, and serial number.
