CVE-2025-3939

Observable Response Discrepancy

MEDIUM
5.3
CVSS Score
Published: May 22, 2025 at 12:33 PM UTC
Updated: June 17, 2026 at 09:20 AM UTC
2 products affected across 1 vendorNiagaraNiagara Enterprise Security· also runs on 3 platforms

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.10.11v < 4.14.2v < 4.15.14.10u104.14u14.15
Affected range stops below 4.10.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.14.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.15.1, so it looks safe — our inference, not a vendor statement
blackberry-qnx (environment) · linux-linux-kernel (environment) · microsoft-windows (environment)
v < 4.10.11v < 4.14.2v < 4.15.14.10u104.14u14.15
Affected range stops below 4.10.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.14.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.15.1, so it looks safe — our inference, not a vendor statement
blackberry-qnx (environment) · linux-linux-kernel (environment) · microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMHoneywell
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-204CWE-203

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