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CVE-2025-8762— INSTAR 2K+/4K UART improper physical access control

Quick assessment

Affected
INSTAR 2K+
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

INSTAR 2K+和INSTAR 4K都是德国INSTAR公司的一款网络摄像头。 INSTAR 2K+和INSTAR 4K 3.11.1 Build 1124版本存在安全漏洞，该漏洞源于UART Interface组件物理访问控制不当。

CVSS 6.8 · Medium EPSS 0.18% · P7
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I. Basic Information for CVE-2025-8762

Vulnerability Information
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Vulnerability Title
INSTAR 2K+/4K UART improper physical access control
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in INSTAR 2K+ and 4K 3.11.1 Build 1124. This issue affects some unknown processing of the component UART Interface. The manipulation leads to improper physical access control. It is possible to launch the attack on the physical device. The exploit has been disclosed to the public and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1263
Source: CVE Program / CVE List V5
Vulnerability Title
INSTAR 2K+和INSTAR 4K 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
INSTAR 2K+和INSTAR 4K都是德国INSTAR公司的一款网络摄像头。 INSTAR 2K+和INSTAR 4K 3.11.1 Build 1124版本存在安全漏洞，该漏洞源于UART Interface组件物理访问控制不当。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
INSTAR 2K+ 3.11.1 Build 1124 -
INSTAR 4K 3.11.1 Build 1124 -

II. Public POCs for CVE-2025-8762

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III. Intelligence Information for CVE-2025-8762

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Same Patch Batch · INSTAR · 2025-08-13 · 3 CVEs total

CVE-2025-8760 9.8 CRITICAL INSTAR 2K+/4K fcgi_server base64_decode buffer overflow
CVE-2025-8761 7.5 HIGH INSTAR 2K+/4K Backend IPC Server denial of service

IV. Related Vulnerabilities

Same product: 2K+
Same vendor: INSTAR
Same weakness: CWE-1263

V. Comments for CVE-2025-8762

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