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Vulnerabilities

Vulnerability · CVE-2025-43876

Under certain circumstances a successful exploitation could result in access to the device.

Published Dec 24, 2025 · catalog updated Dec 24, 2025 · Johnson Controls iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-43876. EPSS is 0.29%. Act only if a listed version of Johnson Controls iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2 is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.29%
Remediation
Advisory link
Affected products
vendor Johnson Controls iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2 0 ≤6.9.2

Under certain circumstances a successful exploitation could result in access to the device.

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 Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2 0 ≤6.9.20 ≤6.9.2

How to fix CVE-2025-43876

What to do

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

Should you patch?

No confirmed exploitation is on record for CVE-2025-43876. EPSS is 0.29%. Act only if a listed version of Johnson Controls iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2 is installed.

Which versions are affected?

Compare what you have installed with Johnson Controls iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2 0 ≤6.9.2 0 ≤6.9.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.29%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

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. Dec 24, 2025 · EUVD

    Detected

    Under certain circumstances a successful exploitation could result in access to the device.

  2. Dec 24, 2025 · EUVD

    Updated

    Under certain circumstances a successful exploitation could result in access to the device.

Sources

  • CVE.orgVulnerability recordCVE-2025-43876

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-43876

    30-day exploitation probability 0.29%

    first.org
  • EUVDVulnerability recordEUVD-2025-205288

    Under certain circumstances a successful exploitation could result in access to the device.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 2, 2026
  • CVE.orgNov 2, 2026
  • EUVDNov 1, 2026