Overview
In the world of cybersecurity, vulnerabilities can appear in the most unexpected places, including popular software like ThemeMakers Visual Content Composer. In this case, a deserialization of untrusted data vulnerability, cataloged as CVE-2025-53299, has emerged, posing a significant threat to users of this software. The danger of this vulnerability lies in its potential for system compromise or data leakage, which could lead to unauthorized access to sensitive data or control over the affected system. Awareness and understanding of this vulnerability are essential for users and administrators to take the necessary steps to protect their systems.
Vulnerability Summary
CVE ID: CVE-2025-53299
Severity: Critical (9.8 CVSS Score)
Attack Vector: Object Injection via Deserialization of Untrusted Data
Privileges Required: None
User Interaction: Required
Impact: System compromise and potential data leakage
Affected Products
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Product | Affected Versions
ThemeMakers Visual Content Composer | n/a through 1.5.8
How the Exploit Works
The vulnerability in question allows an attacker to inject malicious objects into the data stream, which are then deserialized by the ThemeMakers Visual Content Composer. Since the software does not adequately validate or sanitize the incoming data, the injected object is executed within the application’s context, potentially leading to a system compromise or data leakage.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited. This includes a crafted HTTP request carrying a malicious payload:
POST /ThemeMakers/Composer/Endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_object": "...serialized malicious object..." }In this example, the “malicious_object” is a serialized object crafted to exploit the software’s deserialization vulnerability. Upon deserialization, the malicious code within the object is executed, potentially leading to a system compromise or data leakage.
Mitigation
The recommended mitigation for this vulnerability is to apply the vendor-provided patch. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation by detecting and blocking attempts to exploit this vulnerability. However, these measures should only be seen as temporary, and applying the vendor patch should be prioritized to ensure long-term security.