CVE-2023-4486Network attack vector

Unauthenticated service interruption via invalid login credentials

Published Dec 7, 2023 · Updated May 28, 2025

Resource exhaustion in Johnson Controls Metasys and Facility Explorer engines allows remote attackers to interrupt service using invalid credentials. The login endpoint mishandles invalid authentication credentials under undisclosed circumstances, exhausting an unspecified resource. No authentication or user interaction is required, and public materials do not state whether interruption is a hang, crash, or reboot.

CVSS severity7.5
High
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Johnson Controls Metasys and Facility Explorer engines allows remote attackers to interrupt service using invalid credentials. The login endpoint mishandles invalid authentication credentials under undisclosed circumstances, exhausting an unspecified resource. No authentication or user interaction is required, and public materials do not state whether interruption is a hang, crash, or reboot.

The record

CVE
CVE-2023-4486
Published
Dec 7, 2023
Updated
May 28, 2025
Vendor
Johnson Controls
Product
Facility Explorer F4-SNC
Classifications
CWE-400, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 7, 2023CVE publishedPublication date reported by the CVE source.
  2. May 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=11.0 <11.0.6
  2. Affected versionversion=12.0 <12.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Johnson Controls · Facility Explorer F4-SNCversion=11.0 <11.0.6; version=12.0 <12.0.4
Johnson Controls · Metasys Network Enginesversion=11.0 <11.0.6; version=12.0 <12.0.4

Published CVSS scores

7.5Johnson ControlsCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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-400Uncontrolled Resource Consumption
T0814Denial of Service

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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