CVE-2025-3939 Observable Response Discrepancy

What is CVE-2025-3939?

CVE-2025-3939 is a medium-severity vulnerability in Tridium Niagara Enterprise Security, published on 22 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Observable Response Discrepancy vulnerability in Tridium Niagara Framework on Windows, Linux, QNX, Tridium Niagara Enterprise Security on Windows, Linux, QNX allows Cryptanalysis. 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.

Weakness: CWE-203, CWE-204

Which versions are affected by CVE-2025-3939?

It affects 2 products.

Products include Tridium Niagara, Tridium Niagara Enterprise Security.

How do I fix CVE-2025-3939?

No fix has been published for CVE-2025-3939 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-3939 being exploited?

There is no known exploitation of CVE-2025-3939 in the wild and no public exploit code.

Other vulnerabilities in Tridium Niagara Enterprise Security

• CVE-2017-16748 An attacker can log into the local Niagara platform (Niagara AX Framework Versions 3.8 and prior or Niagara 4 Framework Versions 4.4 and pri Critical 9.8
• CVE-2025-3937 Use of Password Hash with Insufficient Computational Effort High 7.7
• CVE-2025-3944 Incorrect Permission Assignment for Critical Resource High 7.2
• CVE-2025-3945 Improper Neutralization of Argument Delimiters in a Command (‘Argument Injection’) High 7.2
• CVE-2017-16744 Path traversal in Niagara AX Framework and Niagara 4 Framework High 7.2

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6hrx-7mgg-5cvp.