Overview
Recently, a critical vulnerability has been identified in Qimou CMS v.3.34.0, a widely used content management system. This vulnerability, designated as CVE-2025-29058, allows a remote attacker to execute arbitrary code via the upgrade.php component. As it stands, the severity of this vulnerability is extreme, with a CVSS Severity Score of 9.8. Any business or individual using the affected version of Qimou CMS should take immediate action to mitigate potential system compromise or data leakage.
Vulnerability Summary
CVE ID: CVE-2025-29058
Severity: Critical (CVSS: 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System Compromise, Potential Data Leakage
Affected Products
No phone number, email, or personal info required.
Product | Affected Versions
Qimou CMS | v.3.34.0
How the Exploit Works
The vulnerability resides in the upgrade.php component of Qimou CMS v.3.34.0. An attacker can exploit this vulnerability by sending specially crafted data to the affected component. Since the input is not properly sanitized, the attacker’s code is executed as part of the CMS’s server-side processes. This allows the attacker to gain control over the underlying system, potentially leading to system compromise or data leakage.
Conceptual Example Code
Here is a conceptual example of how the vulnerability might be exploited. This is a sample HTTP request with a malicious payload:
POST /upgrade.php HTTP/1.1
Host: vulnerable.site
Content-Type: application/x-www-form-urlencoded
upgrade=1&payload=<?php+system($_GET['cmd']);+?>In this example, the attacker sends a POST request to the upgrade.php file with a malicious `payload` parameter. This payload contains PHP code which, when executed, allows the attacker to run arbitrary system commands.
Mitigation Guidance
The recommended mitigation for this vulnerability is to apply the vendor patch. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. These systems should be configured to monitor and block suspicious requests to the upgrade.php component. Users are advised to regularly update their systems to the latest versions and to follow best security practices, such as limiting unnecessary network exposure and regularly reviewing system logs for signs of intrusion.