Skip to content
Fencer Vulns
critical 9.1

CVE-2024-32752 json

Johnson Controls Software House iSTAR Configuration Utility (ICU) Tool

published 2024-06-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-30539

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
0
none known

Summary

The iSTAR door controllers running firmware prior to version 6.6.B, does not support authenticated communications with ICU, which may allow an attacker to gain unauthorized access

Patch / fix

  • Johnson Controls iSTAR Ultra and Ultra LT 6.6.B

Vendor advisories

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

cisa ICSA-24-158-04 updated cvss 9.1

Johnson Controls Software House iStar Door Controller (Update A)

  • Johnson Controls Inc. iSTAR Configuration Utility (ICU) Tool Johnson Controls Inc. Software House iStar Pro, Edge and eX door controllers Johnson Controls Inc. Software House iStar Ultra and Ultra LT door controllers <Firmware_6.6.B
    affected: mitigation “For more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2024-06-v2” 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

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADP 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CNA 4.0 8.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected products

  • Johnson Controls iSTAR Configuration Utility (ICU)
  • Johnson Controls iSTAR Pro, Edge and eX
  • Johnson Controls iSTAR Ultra and Ultra LT
  • johnsoncontrols software_house_istar_pro_door_controller
  • johnsoncontrols icu

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

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.