Overview
CVE-2025-55034 describes a critical vulnerability affecting General Industrial Controls Lynx+ Gateway devices. This vulnerability stems from weak password requirements, making the device susceptible to brute-force attacks. Successful exploitation allows an attacker to gain unauthorized access to the device and potentially the wider industrial control system (ICS) network.
Technical Details
The General Industrial Controls Lynx+ Gateway utilizes insufficiently robust password policies. This means that default or easily guessable passwords may be permitted, and there may be a lack of enforcement for password complexity, length, or rotation. An attacker can leverage this weakness to conduct a brute-force attack, systematically attempting different password combinations until the correct credentials are found. This can be automated using readily available tools.
CVSS Analysis
This vulnerability has been assigned a CVSS v3 score of 8.2 (HIGH). This score reflects the significant risk posed by the vulnerability, considering the potential for remote exploitation and the critical nature of the targeted systems.
- CVSS Score: 8.2
- Severity: HIGH
Possible Impact
A successful brute-force attack could have severe consequences, including:
- Unauthorized Access: Gaining control of the Lynx+ Gateway allows an attacker to access sensitive configuration data and potentially modify device settings.
- Compromised ICS Network: The Gateway often serves as a bridge to the broader ICS network, providing a pathway for lateral movement and further attacks.
- Denial of Service: An attacker could disrupt operations by manipulating the Gateway’s functions or causing it to malfunction.
- Data Theft: Sensitive data transmitted through or stored on the Gateway could be compromised.
Mitigation and Patch Steps
To mitigate the risk posed by CVE-2025-55034, the following steps are recommended:
- Apply the Patch: Contact General Industrial Controls or your vendor to obtain and apply the latest security patch or firmware update for the Lynx+ Gateway. This patch should address the weak password requirements.
- Enforce Strong Passwords: If a patch is not immediately available, implement strong password policies manually. This includes requiring passwords with a minimum length, complexity (uppercase, lowercase, numbers, special characters), and regular password rotation.
- Multi-Factor Authentication (MFA): Implement MFA where possible to add an extra layer of security beyond passwords.
- Network Segmentation: Segment the ICS network to limit the impact of a potential breach. This can prevent an attacker from easily moving laterally to other critical systems.
- Monitor Network Traffic: Monitor network traffic for suspicious activity, such as brute-force attempts or unauthorized access attempts.
- Regular Security Audits: Conduct regular security audits to identify and address potential vulnerabilities in the ICS environment.
