ASKI Energy ALS-Mini-S8 and ALS-Mini-S4

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1. EXECUTIVE SUMMARY CVSS v4 9.9 ATTENTION: Exploitable remotely/low attack complexity Vendor: ASKI Energy Equipment: ALS-Mini-S8, ALS-mini-s4 IP Vulnerability: Missing Authentication for Critical Function
2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to gain full control over the device.
3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following ASKI Energy products are affected: ALS-mini-s4 IP (serial number from 2000 to 5166): All versions ALS-mini-s8 IP (serial number from 2000 to 5166): All versions 3.2 VULNERABILITY OVERVIEW 3.2.1 Missing Authentication for Critical Function CWE-306 A critical severity missing authentication vulnerability exists in the embedded web server of the ALS-mini-S4/S8 IP controllers. There is a lack of authentication functionality. Specifically, an attacker can read and modify product configuration parameters without being authenticated. CVE-2025-9574 has been assigned to this vulnerability. A CVSS v3.1 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N). A CVSS v4 score has also been calculated for CVE-2025-9574. A base score of 9.9 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:H). 3.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS: Energy, Critical Manufacturing COUNTRIES/AREAS DEPLOYED: Europe COMPANY HEADQUARTERS LOCATION: Austria 3.4 RESEARCHER Souvik Kandar of MicroSec (microsec.io) reported this vulnerability to CISA.
4. MITIGATIONS ABB, the parent company of ASKI, reports that the affected products reached their end of life in 2022. As these products are no longer supported, there are no plans for a fix. ABB recommends the following mitigations: Ensure the product is not exposed to the public internet. Within the control system, put the product behind firewall, to strictly control network traffic only from limited whitelisted IPs or alternatively, route the traffic through a secure proxy that enforces authentication and logging. Monitor product access using firewall, IDS, or IPS, and configure alerts for any access attempts from non-whitelisted IPs. Ensure surrounding systems are fully updated to reduce attack vectors. Additionally ABB recommends the following work around: Physically disconnect the ethernet port if embedded web server is not being used. The embedded web server and all its functionalities, incl. load monitoring, alarms, remote configuration, etc. will not be accessible. However, the product will continue functioning as normal based on configured control parameters. For more information, please reference ABB’s security advisory 4TZ00000006007. CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as: Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.
5. UPDATE HISTORY October 23, 2025: Initial Publication