# CVE-2025-14773: ABB T-MAC Plus cross-site scripting

Source: https://junglewise.ai/threats/cve-2025-14773-abb-t-mac-plus-cross-site-scripting  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-03. Updated: 2026-06-03  
License: CC BY 4.0 with a link back

CVE-2025-14773 · Severity: high · CVSS 8 · Published 2026-06-03

ABB T-MAC Plus, a device used for building automation and energy management, contains a security flaw that could allow an attacker to execute malicious scripts in a user's browser. If a technician or administrator interacts with a malicious link or page while logged into the device, the attacker could steal session information or perform unauthorized actions. This could lead to unauthorized access to building control systems and sensitive configuration data.

Technologies: [ABB T-MAC Plus](https://junglewise.ai/threats/technologies/t-mac-plus). Vendors: [ABB](https://junglewise.ai/threats/vendors/abb).

## Quick answers

**Is CVE-2025-14773 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-14773 being exploited in the wild.

**How severe is CVE-2025-14773?** High severity, with a CVSS score of 8, published 3 June 2026.

**Which products and versions are affected?** ABB T-MAC Plus 4.0-24.

**Is there a fix for CVE-2025-14773?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2025-14773 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2025-14773?** Check whether you run ABB T-MAC Plus at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A reflected or stored cross-site scripting (XSS) vulnerability exists in ABB T-MAC Plus version 4.0-24 due to improper neutralization of input during web page generation. An unauthenticated remote attacker can exploit this by tricking a legitimate user into clicking a specially crafted link or visiting a compromised page. Successful exploitation allows the execution of arbitrary JavaScript in the victim's browser session, potentially leading to the theft of session cookies, sensitive information disclosure, or the performance of actions on behalf of the authenticated user. Users are advised to consult ABB's official security advisory for mitigation steps or firmware updates.

## Affected products

- ABB T-MAC Plus 4.0-24

## Timeline

- 2026-06-03: advisory: Vulnerability published by ABB and NVD.

## References

- [https://search.abb.com/library/Download.aspx?DocumentID=9AKK108472A7840&LanguageCode=en&DocumentPartId=&Action=Launch](https://search.abb.com/library/Download.aspx?DocumentID=9AKK108472A7840&LanguageCode=en&DocumentPartId=&Action=Launch)

## Related threats

- [ABB T-MAC Plus incorrect authorization](https://junglewise.ai/threats/cve-2025-14774-abb-t-mac-plus-incorrect-authorization)
- [ABB T-MAC Plus authorization bypass via user-controlled key](https://junglewise.ai/threats/cve-2025-14772-abb-t-mac-plus-authorization-bypass-via-user-controlled-key)
- [ABB T-MAC Plus unauthorized file and directory access](https://junglewise.ai/threats/cve-2025-14771-abb-t-mac-plus-unauthorized-file-and-directory-access)