CVE-2025-3939Network attack vector

Information disclosure via observable response differences

Published May 22, 2025 · Updated May 22, 2025

Observable response discrepancy in Tridium Niagara Framework and Enterprise Security lets remote attackers infer data over a network. Tridium has not disclosed the affected component, request type, or response variation that exposes the inference oracle. No authentication or user interaction is required; the reported consequence is limited to indirect disclosure, with no integrity or availability effect.

CVSS severity5.3
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Observable response discrepancy in Tridium Niagara Framework and Enterprise Security lets remote attackers infer data over a network. Tridium has not disclosed the affected component, request type, or response variation that exposes the inference oracle. No authentication or user interaction is required; the reported consequence is limited to indirect disclosure, with no integrity or availability effect.

The record

CVE
CVE-2025-3939
Published
May 22, 2025
Updated
May 22, 2025
Vendor
Tridium
Product
Niagara Framework
Classifications
CWE-203, CWE-204, CAPEC-97
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 22, 2025CVE publishedPublication date reported by the CVE source.
  2. May 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.10.11
  2. Affected versionversion=0 <4.14.2
  3. Affected versionversion=0 <4.15.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tridium · Niagara Frameworkversion=0 <4.10.11; version=0 <4.14.2; version=0 <4.15.1
Tridium · Niagara Enterprise Securityversion=0 <4.10.11; version=0 <4.14.2; version=0 <4.15.1

Published CVSS scores

5.3Honeywell International Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-203Observable Discrepancy
CWE-204Observable Response Discrepancy
CAPEC-97Cryptanalysis

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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