CVE-2025-26383

highpriority · track · 0EPSS 0.002 · 15 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.24% (15th) EPSS

CVSS 7.4 · high

Is it mine?

3 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cisa_csaf_ot

EPSS · scored 2026-10-28

The iSTAR Configuration Utility (ICU) tool leaks memory, which could result in the unintended exposure of unauthorized data from the Windows PC that ICU is running on.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedICUcisa_csaf_ot
Johnson Controls recommends users update ICU to Version 6.9.5 or greater.
MitigationICUcisa_csaf_ot
For assistance and additional information, please contact Johnson Controls Trust Centertrustcenter@jci.com
https://www.johnsoncontrols.com/trust-center/cybersecurity

cvss

Technical severity, 0–10. One row per scoring source.

7.4

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 2.3–7.4

v3.17.4highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:Nsecondary · CISA US

v4.06.3mediumCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:Nsecondary · ENISA EU

v4.06.3mediumCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/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:Xsecondary · productsecurity@jci.com

v4.02.3lowCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/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:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-457USCWE-457US

affected products (3)

Products and version ranges known to be affected.

Johnson Controls Inc. ICU: <6.9.5all versionscisa_csaf_otUS
Johnson Controls Inc. ICU< 6.9.5cisa_csaf_otUS
Johnson Controls iSTAR Configuration Utility (ICU)≤ 0 ≤Allenisa_euvdEU

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-25-146-01Johnson Controls iSTAR Configuration Utility (ICU) tool2025-05-27icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability may allow an attacker to gain access to memory leaked from the ICU. This utility is only used to configure products that are no longer manufactured or supported. ICU is not used to configure the iSTAR Ultra and the current iSTAR G2 series of controllers. Furthermore, this vulnerability only impacts ICU and the Windows PC it is running on. This vulnerability does not impact iSTARs, including the legacy iSTARs.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot NVD CVE.org MITRE

published 2025-06-11modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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