Is CVE-2025-3940 actively exploited?

No active exploitation of CVE-2025-3940 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-3940 be exploited remotely?

Yes. CVE-2025-3940 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-3940?

CVE-2025-3940 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2025-3940

CWE-1173Published: May 22, 2025· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Improper Use of Validation Framework vulnerability in Tridium Niagara Framework on Windows, Linux, QNX, Tridium Niagara Enterprise Security on Windows, Linux, QNX allows Input Data Manipulation. This issue affects Niagara Framework: before 4.14.2, before 4.15.1, before 4.10.11; Niagara Enterprise Security: before 4.14.2, before 4.15.1, before 4.10.11. Tridium recommends upgrading to Niagara Framework and Enterprise Security versions 4.14.2u2, 4.15.u1, or 4.10u.11.

NVD Source

Technical Analysis

CVE-2025-3940 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.