How severe is CVE-2025-3940?

CVE-2025-3940 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-3940 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3940?

CVE-2025-3940 primarily affects Tridium Niagara. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-3940?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-3940 have an EU (EUVD) identifier?

Yes. CVE-2025-3940 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16125.

When was CVE-2025-3940 published?

CVE-2025-3940 was published on 2025-05-22 and last updated on 2026-06-17.

CVE-2025-3940

CVE-2025-3940 is a medium-severity vulnerability in Tridium Niagara with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1173.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16125
Weakness: CWE-1173
Affected product: Tridium Niagara
Published: 2025-05-22
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-3940?: 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.
How severe is CVE-2025-3940?: CVE-2025-3940 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-3940 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3940?: CVE-2025-3940 primarily affects Tridium Niagara. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-3940?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-3940 have an EU (EUVD) identifier?: Yes. CVE-2025-3940 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16125.
When was CVE-2025-3940 published?: CVE-2025-3940 was published on 2025-05-22 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:tridium:niagara:4.10u10:*:*:*:*:*:*:*
cpe:2.3:a:tridium:niagara:4.14u1:*:*:*:*:*:*:*
cpe:2.3:a:tridium:niagara:4.15:*:*:*:*:*:*:*
cpe:2.3:a:tridium:niagara_enterprise_security:4.10u10:*:*:*:*:*:*:*
cpe:2.3:a:tridium:niagara_enterprise_security:4.14u1:*:*:*:*:*:*:*
cpe:2.3:a:tridium:niagara_enterprise_security:4.15:*:*:*:*:*:*:*

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