CVE-2015-3974

EasyIO EasyIO-30P-SF controllers with firmware before 0.5.21 and 2.x before 2.0.5.21, as used in Accutrol, Bar-Tech Automation, Infocon/EasyIO, Honeywell Automation India, Johnson Controls, SyxthSENSE, Transformative Wave Technologies, Tridium Asia Pacific, and Tridium Europe products, have a hardcoded password, which makes it easier for remote attackers to obtain access via unspecified vectors.

Published: 2015-09-28 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-3974 is rated Moderate Risk (64/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.87%). EPSS rose +1.20% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-3974

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.67% 1.87% +1.20%
2 2026-02-19 0.49% 0.67% +0.18%
3 2026-01-04 — 0.49% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-3974

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.0 2.0 HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.0 10.0 [email protected]

Weakness enumeration for CVE-2015-3974

Affected software / configurations for CVE-2015-3974

Vendor Product Version Raw CPE
easyio easyio-30p-sf_firmware <= 0.5.20 cpe:2.3:o:easyio:easyio-30p-sf_firmware:*:*:*:*:*:*:*:*
easyio easyio-30p-sf_firmware <= 2.0.5.20 cpe:2.3:o:easyio:easyio-30p-sf_firmware:*:*:*:*:*:*:*:*
easyio easyio-30p-sf — cpe:2.3:h:easyio:easyio-30p-sf:*:*:*:*:*:*:*:*

References for CVE-2015-3974

URL Tags
https://ics-cert.us-cert.gov/advisories/ICSA-15-237-02 Third Party Advisory US Government Resource
cvelogic Threat Intelligence