CVE-2025-61736

mediumpriority · track · 0EPSS 0.001 · 1 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.10% (1st) EPSS

CVSS 6.5 · medium

Is it mine?

11 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cisa_csaf_ot

EPSS · scored 2026-10-27

Successful exploitation of this vulnerability could result in the product failing to re-establish communication once the certificate expires.

remediations

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

A vendor fix is available.

FixediSTAR Edgecisa_csaf_ot
Applies primarily to iSTAR eX, iSTAR Edge, and iSTAR LT panels
FixediSTAR eXcisa_csaf_ot
Applies primarily to iSTAR eX, iSTAR Edge, and iSTAR LT panels
MitigationiSTAR Edgecisa_csaf_ot
Convert encryption mode to TLS 1.3, per cluster:
MitigationiSTAR Ultra (if in TLS 1.2)cisa_csaf_ot
Convert encryption mode to TLS 1.3, per cluster:
MitigationiSTAR Ultra LT (if in TLS 1.2)cisa_csaf_ot
Convert encryption mode to TLS 1.3, per cluster:
MitigationiSTAR Ultra SE (if in TLS 1.2)cisa_csaf_ot
Convert encryption mode to TLS 1.3, per cluster:
MitigationiSTAR eXcisa_csaf_ot
Convert encryption mode to TLS 1.3, per cluster:

cvss

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

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.1

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US

v4.07.1highCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.07.1highCVSS: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:Xsecondary · productsecurity@jci.com

v4.04.9mediumCVSS: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: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)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-298USCWE-298US

affected products (11)

Products and version ranges known to be affected.

Johnson Controls Inc. iSTAR Edge: <TLS_1.2all versionscisa_csaf_otUS
Johnson Controls Inc. iSTAR Ultra (if in TLS 1.2): <TLS_1.2all versionscisa_csaf_otUS
Johnson Controls Inc. iSTAR Ultra LT (if in TLS 1.2): <TLS_1.2all versionscisa_csaf_otUS
Johnson Controls Inc. iSTAR Ultra SE (if in TLS 1.2): <TLS_1.2all versionscisa_csaf_otUS
Johnson Controls Inc. iSTAR eX: <TLS_1.2all versionscisa_csaf_otUS
Johnson Controls Inc. iSTAR Edge< TLS_1.2cisa_csaf_otUS
Johnson Controls Inc. iSTAR Ultra (if in TLS 1.2)< TLS_1.2cisa_csaf_otUS
Johnson Controls Inc. iSTAR Ultra LT (if in TLS 1.2)< TLS_1.2cisa_csaf_otUS
Johnson Controls Inc. iSTAR Ultra SE (if in TLS 1.2)< TLS_1.2cisa_csaf_otUS
Johnson Controls Inc. iSTAR eX< TLS_1.2cisa_csaf_otUS
Johnson Controls iSTAReX, iSTAR Edge, iSTAR Ultra LT, iSTAR Ultra , iSTAR Ultra SE≤ iSTAR All versions prior to TLS 1.2enisa_euvdEU

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-25-338-04Johnson Controls iSTAR2025-12-04icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could result in the product failing to re-establish communication once the certificate expires.

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 2025-12-17modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

scry

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