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CVE-2025-8754: Critical Missing Authentication Vulnerability in ABB Ability™ zenon

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Overview

This report details a significant security vulnerability identified as CVE-2025-8754, which affects the ABB Ability™ zenon software. This software vulnerability pertains to missing authentication for a critical function, which could lead to potential system compromise or data leakage. The widespread use of ABB Ability™ zenon from versions 7.50 to 14 underscores the urgency of addressing this issue.

Vulnerability Summary

CVE ID: CVE-2025-8754
Severity: High (7.5 CVSS)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

ABB Ability™ zenon | 7.50 through 14

How the Exploit Works

Due to a missing authentication check on a critical function, an attacker can send specially crafted network requests to the affected systems. The system inadvertently processes these requests without validating the requester’s identity. This flaw could allow an attacker to manipulate system settings or exfiltrate sensitive data without the need for any user interaction or privileges.

Conceptual Example Code

A conceptual example of an exploit might involve sending a malicious JSON payload to a vulnerable endpoint. This could look something like the following:

POST /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_payload": "Exploit Code Here" }

This payload, if processed by the ABB Ability™ zenon endpoint, could enable unauthorized access to critical system functions or data.

Mitigation and Recommendations

Users of ABB Ability™ zenon versions 7.50 through 14 are advised to apply the vendor patch as soon as possible. If immediate patching is not feasible, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can act as a temporary mitigation measure. However, these solutions only reduce the risk of exploitation and do not eliminate the vulnerability. Therefore, applying the vendor patch remains the primary and most effective solution.

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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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