What is CVE-2025-14771?

CVE-2025-14771 is a critical-severity vulnerability in Abb T-Mac Plus, classified under Files or Directories Accessible to External Parties. CVSS score: 9.9/10. Published 2026-06-03.

How severe is CVE-2025-14771?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Vulnerability in Abb T-Mac Plus

CVE-2025-14771

Files or directories accessible to external parties vulnerability in ABB T-MAC Plus. This issue affects T-MAC Plus: 4.0-24.

Published 2026-06-03 · last modified 2026-07-22.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (25.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Abb T-Mac Plus — versions 4.0-24
Abb T-Mac Plus — versions 4.0-24

Weakness classification (CWE)

CWE-552 — Files or Directories Accessible to External Parties

References

search.abb.com/library/Download.aspx (Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2025-14771?: CVE-2025-14771 is a critical-severity vulnerability in Abb T-Mac Plus, classified under Files or Directories Accessible to External Parties. CVSS score: 9.9/10. Published 2026-06-03.
How severe is CVE-2025-14771?: Critical severity. CVSS v3 base score is 9.9 out of 10.