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CVE-2025-52873: Unprotected Telnet Service Vulnerability in Cognex In-Sight Explorer and In-Sight Camera Firmware

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Overview

CVE-2025-52873 is a critical vulnerability found in Cognex In-Sight Explorer and In-Sight Camera Firmware. It exposes an unprotected telnet-based service on port 23, which can be exploited to perform unauthorized management operations such as firmware upgrades and device reboots. This vulnerability affects a wide range of industries utilizing these devices for quality inspection, identification, and guidance. The severity of this vulnerability stems from the potential for system compromise and data leakage, contradicting the security model proposed in the user manual.

Vulnerability Summary

CVE ID: CVE-2025-52873
Severity: High (8.1 CVSS Score)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

Cognex In-Sight Explorer | All versions prior to latest patch
Cognex In-Sight Camera Firmware | All versions prior to latest patch

How the Exploit Works

This vulnerability stems from the software’s exposure of a telnet-based service on port 23, which is used for management operations such as firmware upgrades and device reboots. Typically, these operations require authentication, but due to this vulnerability, an attacker with protected privileges can successfully invoke the SetSystemConfig functionality to modify relevant device properties such as network settings. This effectively contradicts the security model proposed in the user manual and opens the system to potential compromise or data leakage.

Conceptual Example Code

The exploit might look like this in a hypothetical scenario:

telnet target.example.com 23
Trying target.example.com...
Connected to target.example.com.
Escape character is '^]'.
login: protected_user
password: protected_password
$ SetSystemConfig network_settings new_network_settings

In this example, the attacker uses the telnet command to connect to the target device. They then log in using protected credentials, either guessed, stolen, or obtained through other means, and invoke the SetSystemConfig command to modify the network settings.

Mitigation Guidance

To address this vulnerability, apply the vendor patch as soon as it is released. This is the most recommended solution as it directly fixes the vulnerability in the affected software. In the meantime, use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation. These tools can monitor and block suspicious activity, thereby providing an additional layer of security. However, they cannot completely eliminate the risk posed by this vulnerability, so patching should not be delayed.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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