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Fencer Vulns
high 7.5

CVE-2023-4486 json

Uncontrolled Resource Consumption in Metasys and Facility Explorer

published 2023-12-07 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-54341

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits
0
none known

Summary

Under certain circumstances, invalid authentication credentials could be sent to the login endpoint of Johnson Controls Metasys NAE55, SNE, and SNC engines prior to

versions 11.0.6 and 12.0.4

and Facility Explorer F4-SNC engines prior to versions 11.0.6 and 12.0.4 to cause denial-of-service.

Patch / fix

  • Johnson Controls Metasys NAE55/SNE/SNC 11.0.6, 12.0.4
  • Johnson Controls Facility Explorer F4-SNC 11.0.6, 12.0.4

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-341-03 updated cvss 7.5

Johnson Controls Metasys and Facility Explorer (Update A)

  • Johnson Controls Facility Explorer F4-SNC <11.0.6, <12.0.4
    affected: vendor fix, mitigation “Johnson Controls recommends users update the products to the latest versions:” johnsoncontrols.com
  • Johnson Controls Metasys NAE55 engines <11.0.6, <12.0.4 Johnson Controls Metasys SNC engines <11.0.6, <12.0.4 Johnson Controls Metasys SNE engines <11.0.6, <12.0.4
    affected: fixed in 11.0.6, mitigation “Johnson Controls recommends users update the products to the latest versions:” johnsoncontrols.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.83% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Johnson Controls Metasys NAE55/SNE/SNC
  • Johnson Controls Facility Explorer F4-SNC

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.