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Easy IO Neo CVE-2026-64892

| EUVDEUVD-2026-91073 MEDIUM
Information Exposure (CWE-200)
2026-10-01 jci GHSA-366v-rjm4-rpqp
6.3
CVSS 4.0 · Vendor: jci
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate as high-privilege user
  2. Exploit
    Access common resource locations
  3. Execution
    Harvest exposed sensitive data
  4. Impact
    Exfiltrate disclosed information

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK

2 techniques across 2 tactics: Collection, Discovery

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires an attacker to already hold high-privilege access to the Easy IO Neo controller (CVSS PR:H) and depends on passive user interaction occurring (UI:P); the attacker then reads sensitive data from predictable 'common resource locations' within the product. Limiting factors: the high-privilege authentication requirement and the dependency on user interaction substantially reduce opportunistic exploitation, and the disclosed data impact is Low. Remediation is to upgrade to Easy IO Neo 3.3b63 or later.

Impact

This is a medium-severity (CVSS 4.0 base 6.3) information-disclosure flaw (CWE-200) in Johnson Controls Easy IO Neo. The vendor-provided CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:L) signals network reachability and low attack complexity, but materially constrains real-world risk through PR:H (high privileges required) and UI:P (passive user interaction required) - meaning an attacker must already hold a high-privilege account AND rely on a victim's incidental interaction. The confidentiality impact is only Low (VC:L), consistent with the description's limited 'collect data from common resource locations.' Notably, the input vector also asserts subsequent-system impacts SC:H/SI:H/SA:H, which is unusual for a pure CWE-200 disclosure issue and appears inconsistent with the Low vulnerable-system impacts and the description - verify these subsequent-system ratings with the vendor advisory, as they heavily inflate the score. No EPSS score, no KEV listing, and no POC were provided; there is no public exploit identified at time of analysis. Overall this is a genuine but lower-priority issue: the high-privilege and user-interaction preconditions, combined with limited direct confidentiality impact and no evidence of exploitation, place it well below internet-facing unauthenticated flaws in remediation urgency.

Exploit ScenarioDerived

An attacker who already possesses a high-privilege account on an Easy IO Neo controller leverages the flaw to read sensitive data stored in common/predictable resource locations once a legitimate user interaction occurs. No public proof-of-concept is available, and exploitation yields limited (Low) confidentiality disclosure rather than full system compromise.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 01, 2026

Information disclosure in Johnson Controls Easy IO Neo versions before 3.3b63 allows an authenticated high-privileged attacker to read sensitive data from predictable common resource locations, but requires passive user interaction and yields low confidentiality impact per the independent assessment. This medium-severity flaw (CVSS 4.0 base 6.3, CWE-200) has no public exploit identified at time of analysis. Exploitation depends on the attacker already holding high-privilege access to the controller and on a victim performing passive user interaction, substantially limiting opportunistic exploitation.

RemediationAI

Vendor-released patch: 3.3b63. Upgrade Johnson Controls Easy IO Neo to version 3.3b63 or later as the primary remediation; refer to the vendor advisory at https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories for specific guidance. Until the upgrade can be applied, compensating controls include restricting network access to the controller's management interfaces (e.g., blocking unnecessary ports and limiting source IPs), enforcing least privilege to eliminate or tightly control high-privilege accounts since exploitation requires PR:H, and monitoring for anomalous read operations from common resource locations; these controls may reduce administrative convenience for legitimate users. No public exploit has been identified, but the high privilege requirement and user interaction dependency mean patch deployment should still be prioritized for exposed controllers.

Affected VersionsENISA

Easy IO Neo 0 <3.3b63

Affected Packages

euvd easy_io_neo fix: 3.3b63

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability is classified as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) and affects the Johnson Controls Easy IO Neo building automation controller, identified by CPE cpe:2.3:a:johnson_controls:easy_io_neo:*:*:*:*:*:*:*:*. The root cause is that the product stores or exposes sensitive data in predictable 'common resource locations' without adequate access controls, allowing an attacker with high privileges to read that data over the network. The provided CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:L/SC:H/SI:H/SA:H) indicates network attack vector, high privileges required, passive user interaction, low confidentiality impact, and potential subsequent system impacts; the independent assessment (CVSS 3.1 AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N) aligns by requiring high-privilege access and passive user interaction while classifying the confirmed data impact as low with no scope change. No public exploit code or active exploitation has been identified at time of analysis.

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Severity by source

Vendor (jci) PRIMARY 6.3 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:L/SC:H/SI:H/SA:H
vuln.today AI 2.4 LOW

Network-reachable but needs high-privilege authentication (PR:H) and user interaction (UI:R); CWE-200 yields Low confidentiality only with no integrity or availability impact.

3.1 AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (jci).

CVSS VectorVendor: jci

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
Passive
Vulnerable system: Confidentiality
Low
Vulnerable system: Integrity
None
Vulnerable system: Availability
Low
Subsequent system: Confidentiality
High
Subsequent system: Integrity
High
Subsequent system: Availability
High

Lifecycle Timeline

1
Patch available
Oct 01, 2026 - 22:18 EUVD

DescriptionCVE.org

  • Exposure of Sensitive Information vulnerability in Johnson Controls Easy IO Neo allows Collect Data from Common Resource Locations.

This issue affects Easy IO Neo: before 3.3b63.

Threat Intelligence Overview

EPSS Score
0.2%
Top 86% exploitable
Prevalence
Low
niche building-automation/industrial controller, industry-specific deployment footprint
Threat Intel
1
1 source
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat Yes
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: +10
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Threat IntelligenceMISP

CISA Advisories
Sources: CISA (public domain)

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