Original Article Summary

View CSAF Summary ABB became aware of vulnerability in the products versions listed as affected in the advisory. An update is available that resolves the reported vulnerabilities. An attacker who successfully exploited any of these vulnerabilities could potentially compromise the system in different ways. The following versions of ABB T-MAC Plus are affected: T-MAC Plus 4.0-24 (CVE-2025-14771, CVE-2025-14772, CVE-2025-14773, CVE-2025-14774) CVSS Vendor Equipment Vulnerabilities v3 9.9 ABB ABB T-MAC Plus Files or Directories Accessible to External Parties, Authorization Bypass Through User-Controlled Key, Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), Incorrect Authorization Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2025-14771 File Disclosure in ABB T-MAC Plus web application allows authenticated users to exfiltrate files containing sensitive information via crafted HTTP GET request. View CVE Details Affected Products ABB T-MAC Plus Vendor: ABB Product Version: ABB T-MAC Plus 4.0-24 Product Status: known_affected Remediations Vendor fix ABB has investigated these vulnerabilities to provide adequate protection to customers. The problem is corrected in the following product versions: T-MAC Plus version 4.0-25 ABB recommends that customers apply the update at earliest convenience. Mitigation The misconfigurations on the IIS server, which were reported to security auditing, have been corrected. File Browsing Feature was enabled on that IIS server. That feature along with the default IIS site has been removed. Workaround Workarounds are specific measures that a user can take to help block an attack, for example, temporarily disabling the vulnerable feature may remove the exposure with well-known impact on functionality. ABB has tested the following workarounds. Although these workarounds will not correct the underlying vulnerability, they can help block known attack vectors. When a workaround reduces functionality, this is identified below as “Impact of workaround”. Relevant CWE: CWE-552 Files or Directories Accessible to External Parties Metrics CVSS Version Base Score Base Severity Vector String 3.1 9.9 CRITICAL CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2025-14772 Broken access controls in ABB T-MAC Plus web application allows unprivileged users to performs administrative operations View CVE Details Affected Products ABB T-MAC Plus Vendor: ABB Product Version: ABB T-MAC Plus 4.0-24 Product Status: known_affected Remediations Vendor fix ABB has investigated these vulnerabilities to provide adequate protection to customers. The problem is corrected in the following product versions: T-MAC Plus version 4.0-25 ABB recommends that customers apply the update at earliest convenience. Mitigation ABB T-MAC Plus web application supports several classes of users (e.g., Admin, Customer, Operator, etc.) with different roles. An authenticated user with low privileges (e.g., Customer) can execute administrative operations. The privileges associated to the different users have been revised and applied correctly. Workaround Workarounds are specific measures that a user can take to help block an attack, for example, temporarily disabling the vulnerable feature may remove the exposure with well-known impact on functionality. ABB has tested the following workarounds. Although these workarounds will not correct the underlying vulnerability, they can help block known attack vectors. When a workaround reduces functionality, this is identified below as “Impact of workaround”. Relevant CWE: CWE-639 Authorization Bypass Through User-Controlled Key Metrics CVSS Version Base Score Base Severity Vector String 3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2025-14773 Stored Cross-Site Scripting (XSS) in ABB T-MAC Plus web application allows authenticated users to execute arbitrary HTML or JavaScript code on victims browser. View CVE Details Affected Products ABB T-MAC Plus Vendor: ABB Product Version: ABB T-MAC Plus 4.0-24 Product Status: known_affected Remediations Vendor fix ABB has investigated these vulnerabilities to provide adequate protection to customers. The problem is corrected in the following product versions: T-MAC Plus version 4.0-25 ABB recommends that customers apply the update at earliest convenience. Mitigation A DOM-based XSS vulnerability is present. If a malicious actor gains access to the operations network and can create or edit an existing entity, they could insert malicious JavaScript code to be executed in the web forms. New T-MAC Plus version 4.0-25 will correct the vulnerability. Workaround Workarounds are specific measures that a user can take to help block an attack, for example, temporarily disabling the vulnerable feature may remove the exposure with well-known impact on functionality. ABB has tested the following workarounds. Although these workarounds will not correct the underlying vulnerability, they can help block known attack vectors. When a workaround reduces functionality, this is identified below as “Impact of workaround”. Relevant CWE: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Metrics CVSS Version Base Score Base Severity Vector String 3.1 8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H CVE-2025-14774 Insecure network protocol in ABB T-MAC Plus allows unauthenticated attackers to perform a denial-of-service (DoS) of the Card Reader service. View CVE Details Affected Products ABB T-MAC Plus Vendor: ABB Product Version: ABB T-MAC Plus 4.0-24 Product Status: known_affected Remediations Vendor fix ABB has investigated these vulnerabilities to provide adequate protection to customers. The problem is corrected in the following product versions: T-MAC Plus version 4.0-25 ABB recommends that customers apply the update at earliest convenience. Mitigation If a malicious actor gains physical access to a serial device, disables it, connects a malicious device with same IP address, and sends a specially crafted message, the service responsible for communicating with the device will be blocked until a manual restart is performed. New T-MAC Plus version 4.0-25 will correct the vulnerability. Workaround Workarounds are specific measures that a user can take to help block an attack, for example, temporarily disabling the vulnerable feature may remove the exposure with well-known impact on functionality. ABB has tested the following workarounds. Although these workarounds will not correct the underlying vulnerability, they can help block known attack vectors. When a workaround reduces functionality, this is identified below as “Impact of workaround”. Relevant CWE: CWE-863 Incorrect Authorization Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.4 HIGH CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Acknowledgments Angelo Catalani of the Italian National Cybersecurity Agency (ACN) responsibly disclosed the vulnerabilities and provided valuable input on product improvements. Notice The information in this document is subject to change without notice, and should not be construed as a commitment by ABB. ABB provides no warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, for the information contained in this document, and assumes no responsibility for any errors that may appear in this document. In no event shall ABB or any of its suppliers be liable for direct, indirect, special, incidental or consequential damages of any nature or kind arising from the use of this document, or from the use of any hardware or software described in this document, even if ABB or its suppliers have been advised of the possibility of such damages. This document and parts hereof must not be reproduced or copied without written permission from ABB, and the contents hereof must not be imparted to a third party nor used for any unauthorized purpose. All rights to registrations and trademarks reside with their respective owners. Frequently Asked Questions What causes the vulnerability? - The vulnerabilities are caused by: - Wrong configuration in T-MAC Plus IIS Server. - Wrong configuration of privileges of users. - Lack of encryption in communication protocol. What is T-MAC Plus? - T-MAC Plus is a Terminal Management System (TMS) that handles the different operations (receipt and dispatch product, access control, product movement in the tank farm, …) in a terminal. It is applicable to different type of products such as chemical and petroleum terminals, pipeline or refinery tankage, bulk plants or hydrogen terminals. The following components are affected: - TMAC Plus Web application - Communication protocol with Card Readers What might an attacker use the vulnerability to do? - An attacker who successfully exploited this vulnerability could cause the affected system node to stop or become inaccessible and allow the attacker to insert and run arbitrary code. How could an attacker exploit the vulnerability? - An attacker could try to exploit the vulnerability by creating a specially crafted message and sending the message to an affected system node. This would require that the attacker has access to the system network, by connecting to the network directly. Recommended practices help mitigate such attacks, see section Mitigating Factors. Could the vulnerability be exploited remotely? - No, to exploit this vulnerability an attacker would need to have physical access to an affected system node. Can functional safety be affected by an exploit of this vulnerability? - While these vulnerabilities primarily impact confidentiality, integrity, and availability, they do not directly affect functional safety in the traditional sense What does the update do? - The update removes the vulnerability by modifying the way that the T-MAC Plus web application and the communication protocol are configured. When this security advisory was issued, had this vulnerability been publicly disclosed? - No, ABB received information about this vulnerability through responsible disclosure. When this security advisory was issued, had ABB received any reports that this vulnerability was being exploited? - No, ABB had not received any information indicating that this vulnerability had been exploited when this security advisory was originally. Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability. Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolate 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 recent version available. Also recognize VPN is only as secure as its 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. 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 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. Advisory Conversion Disclaimer This ICSA is a verbatim republication of ABB PSIRT 9AKK108472A7840 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided "as-is" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact ABB PSIRT directly for any questions regarding this advisory. Revision History Initial Release Date: 2026-06-03 Date Revision Summary 2026-06-03 1 Initial version. 2026-07-14 2 Initial CISA Republication of ABB PSIRT 9AKK108472A7840 advisory Legal Notice and Terms of Use