INSTAR 2K+/4K 3.11.1 Build 1124 UART Interface improper physical access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in INSTAR 2K+ and 4K 3.11.1 Build 1124. It has been rated as problematic. The impacted element is an unknown function of the component UART Interface. The manipulation leads to improper physical access control. This vulnerability is referenced as CVE-2025-8762. It is possible to launch the attack on the physical device. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in INSTAR 2K+ and 4K 3.11.1 Build 1124 and classified as critical. This issue affects an unknown function of the component UART Interface. The manipulation with an unknown input leads to a improper physical access control vulnerability. Using CWE to declare the problem leads to CWE-1263. The product is designed with access restricted to certain information, but it does not sufficiently protect against an unauthorized actor with physical access to these areas. Impacted is confidentiality, integrity, and availability.

The weakness was published by Michael Imfeld with modzero AG as MZ-25-03. The advisory is shared at modzero.com. The identification of this vulnerability is CVE-2025-8762. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Michael Imfeld. The exploit is available at modzero.com. It is declared as proof-of-concept.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-24544). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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: 6.8
VulDB Meta Temp Score: 6.5

VulDB Base Score: 6.8
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.8
CNA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Improper physical access control
CWE: CWE-1263 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Yes
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Author: Michael Imfeld
Download: 🔒

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

08/13/2025 Advisory disclosed
08/13/2025 +0 days VulDB entry created
08/13/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: MZ-25-03
Researcher: Michael Imfeld
Organization: modzero AG
Status: Not defined

CVE: CVE-2025-8762 (🔒)
GCVE (CVE): GCVE-0-2025-8762
GCVE (VulDB): GCVE-100-319865
EUVD: 🔒

Entryinfo

Created: 08/13/2025 08:16
Updated: 08/13/2025 09:44
Changes: 08/13/2025 08:16 (55), 08/13/2025 08:18 (4), 08/13/2025 09:21 (1), 08/13/2025 09:44 (30)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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