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CVE-2025-28237: Privilege Escalation Vulnerability in WorldCast Systems ECRESO FM/DAB/TV Transmitter

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Overview

In a world where digital broadcasting is increasingly becoming the norm, ensuring the security of the tools that facilitate this global communication is paramount. This blog post discusses a critical vulnerability, CVE-2025-28237, that was discovered in the WorldCast Systems ECRESO FM/DAB/TV Transmitter v1.10.1. This vulnerability, if exploited, allows authenticated attackers to escalate privileges via a malicious JSON payload. This is an issue of considerable concern as it could potentially lead to system compromise or data leakage, impacting broadcast operations and potentially compromising sensitive information.

Vulnerability Summary

CVE ID: CVE-2025-28237
Severity: High (CVSS 8.8)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: System Compromise, Data Leakage

Affected Products

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Product | Affected Versions

WorldCast Systems ECRESO FM/DAB/TV Transmitter | v1.10.1

How the Exploit Works

The exploit takes advantage of a flaw in the authentication system of the ECRESO FM/DAB/TV Transmitter. An authenticated attacker can send a specially crafted JSON payload to the transmitter system which, due to insufficient input validation, could allow for a privilege escalation attack. This means the attacker could potentially gain higher-level permissions than intended, giving them the ability to carry out actions or access data that would otherwise be restricted.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This example shows a crafted HTTP request containing a malicious JSON payload.

POST /API/Upgrade HTTP/1.1
Host: target.example.com
Content-Type: application/json
Authorization: Bearer {valid_token}
{
"update": {
"version": "1.10.2",
"package": "{malicious_payload}"
}
}

In this example, “{valid_token}” would be a token tied to an authenticated user (potentially acquired through other means), and “{malicious_payload}” would be a crafted payload designed to exploit the vulnerability, potentially leading to privilege escalation.
It is strongly recommended that all users of the WorldCast Systems ECRESO FM/DAB/TV Transmitter v1.10.1 apply the vendor-released patch at the earliest opportunity. As a temporary mitigation, the use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can help identify and block malicious activities related to this vulnerability.

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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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