CVE-2025-53695

highpriority · track · 0EPSS 0.009 · 60 %ileEUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.90% (60th) EPSS
CVSS 8.8 · high
Is it mine?
11 products
Check your exposure
Who says so?
3 sources
cnnvd · enisa_euvd · cisa_csaf_ot

EPSS · scored 2026-10-27

OS Command Injection in iSTAR Ultra products web application allows an authenticated attacker to gain even more privileged access ('root' user) to the device firmware.

01

remediations

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

A vendor fix is available.

  • FixediSTAR Ultracisa_csaf_ot

    According to Johnson Controls, the iSTAR Ultra is an older device that has a planned end of service date within a year from this publication. Johnson Controls recommends users consider upgrading to a newer control unit. The hardware installation manual for iSTAR Ultra requires all control units be installed in a restricted access, protected area to lower the risk of physical tampering.

  • MitigationiSTAR Edge G2cisa_csaf_ot

    Dragos recommends end users place the following network restrictions around iSTAR controllers, regardless of model or firmware version:

  • MitigationiSTAR Ultracisa_csaf_ot

    Dragos recommends end users place the following network restrictions around iSTAR controllers, regardless of model or firmware version:

  • MitigationiSTAR Ultra G2cisa_csaf_ot

    Dragos recommends end users place the following network restrictions around iSTAR controllers, regardless of model or firmware version:

  • MitigationiSTAR Ultra G2 SEcisa_csaf_ot

    Dragos recommends end users place the following network restrictions around iSTAR controllers, regardless of model or firmware version:

  • MitigationiSTAR Ultra SEcisa_csaf_ot

    Dragos recommends end users place the following network restrictions around iSTAR controllers, regardless of model or firmware version:

02

cvss

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

9.4
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.6–9.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US
v4.09.4criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:Hsecondary · ENISA EU
v4.09.4criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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 · ot-cert@dragos.com
v4.07.6highCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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)
03

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USCWE-78US
05

affected products (11)

Products and version ranges known to be affected.

06

advisories (1)

Vendor and ecosystem advisories describing this.

  • ICSA-25-224-02Johnson Controls iSTAR Ultra, iSTAR Ultra SE, iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2 (Update A)2025-08-12icsa · cisa_csaf_otUS

    Successful exploitation of these vulnerabilities may allow an attacker to modify firmware and access the space that is protected by the device.

07

also known as (3)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcisa_csaf_otNVDCVE.orgMITRE
published 2025-07-28modified 2026-06-17
09

references (4)

External citations — patches, advisories, analysis.

scry

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