CVE-2025-61736
iSTAR- Improper Validation of Certificate Expiration
Successful exploitation of this vulnerability could result in the product failing to re-establish communication once the certificate expires.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
iSTAR- Improper Validation of Certificate Expiration
Successful exploitation of this vulnerability could result in the product failing to re-establish communication once the certificate expires.
- Record
CVE-2025-61736- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-298
- Updated
- 2026-11-02
EUVDEUVD-2025-203896
Successful exploitation of this vulnerability could result in the product failing to re-establish communication once the certificate expires.
- Record
EUVD-2025-203896- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-56m3-38wm-p83g
Successful exploitation of this vulnerability could result in the product failing to re-establish...
Successful exploitation of this vulnerability could result in the product failing to re-establish communication once the certificate expires.
- Record
GHSA-56m3-38wm-p83g- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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 - Weakness
- CWE-298
- Updated
- 2026-11-02
NVD
Successful exploitation of this vulnerability could result in the product failing to re-establish communication once the certificate expires.
- Record
CVE-2025-61736- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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 - Weakness
- CWE-298
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-61736 is a high vulnerability (CVSS 7.1) in Johnson Controls Istarex, Istar Edge, Istar Ultra Lt, Istar Ultra , Istar Ultra Se, published December 17, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.10%, the 1st percentile. No source names a fixed version.