Johnson Controls iSTAR Ultra up to 6.9.2 Firmware code download

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Johnson Controls iSTAR Ultra up to 6.9.2. This vulnerability affects unknown code of the component Firmware Handler. Performing a manipulation results in code download. This vulnerability is known as CVE-2025-53696. Attacking locally is a requirement. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in Johnson Controls iSTAR Ultra up to 6.9.2. This affects some unknown processing of the component Firmware Handler. The manipulation with an unknown input leads to a code download vulnerability. CWE is classifying the issue as CWE-494. The product downloads source code or an executable from a remote location and executes the code without sufficiently verifying the origin and integrity of the code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

iSTAR Ultra performs a firmware verification on boot, however the verification does not inspect certain portions of the firmware. These firmware parts may contain malicious code. Tested up to firmware 6.9.2, later firmwares are also possibly affected.

The advisory is shared at raw.githubusercontent.com. This vulnerability is uniquely identified as CVE-2025-53696 since 07/08/2025. The exploitability is told to be easy. An attack has to be approached locally. The exploitation requires an enhanced level of successful authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1495 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.7
VulDB Temp Score: 6.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Code download
CWE: CWE-494
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/08/2025 CVE reserved
07/28/2025 +20 days Advisory disclosed
07/28/2025 +0 days VulDB entry created
07/28/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: raw.githubusercontent.com
Status: Not defined

CVE: CVE-2025-53696 (🔒)
GCVE (CVE): GCVE-0-2025-53696
GCVE (VulDB): GCVE-100-317925

Entryinfo

Created: 07/28/2025 17:39
Changes: 07/28/2025 17:39 (65)
Complete: 🔍
Cache ID: 216::103

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