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Vulnerabilities

Security incident · CVE-2025-26383

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.

Published Jun 11, 2025 · catalog updated Jun 11, 2025 · Johnson Controls iSTAR Configuration Utility (ICU)

Check this week

CVE-2025-26383 is not in CISA KEV. FIRST estimates a 24.00% chance of exploitation in the next 30 days. Check whether you run Johnson Controls iSTAR Configuration Utility (ICU).

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
24.00%
Remediation
Advisory link
Affected products
vendor Johnson Controls iSTAR Configuration Utility (ICU) 0 ≤All

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Johnson Controls iSTAR Configuration Utility (ICU) 0 ≤All0 ≤All

How to fix CVE-2025-26383

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-26383 is not in CISA KEV. FIRST estimates a 24.00% chance of exploitation in the next 30 days. Check whether you run Johnson Controls iSTAR Configuration Utility (ICU).

Which versions are affected?

Compare what you have installed with Johnson Controls iSTAR Configuration Utility (ICU) 0 ≤All 0 ≤All. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 24.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 11, 2025 · EUVD

    Detected

    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.

  2. Jun 11, 2025 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-26383

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-18131

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.