CVE-2025-44071: Critical Remote Code Execution Vulnerability in SeaCMS v13.3

Overview

The cybersecurity landscape is under constant threat from new vulnerabilities. One such vulnerability, CVE-2025-44071, has been discovered in the SeaCMS v13.3, a popular content management system. This vulnerability, if exploited by bad actors, allows for remote code execution (RCE), a severe form of cyberattack that allows an attacker to run arbitrary code on the victim’s system.
Given the popularity of SeaCMS, this vulnerability could potentially affect a significant number of systems worldwide, leading to potential system compromise and data leakage. It is therefore crucial that system administrators and cybersecurity professionals understand the nature of this vulnerability, its potential impacts, and the available mitigation strategies.

Vulnerability Summary

CVE ID: CVE-2025-44071
Severity: Critical (CVSS score 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise, potential data leakage

Affected Products

Product | Affected Versions

SeaCMS | v13.3

How the Exploit Works

The vulnerability resides in the phomebak.php component of SeaCMS. An attacker can exploit this vulnerability by sending a specially crafted request to this component. This malformed request can trigger the remote code execution vulnerability, allowing the attacker to run arbitrary code on the victim’s system.

Conceptual Example Code

Here’s a conceptual example of how an attacker might exploit this vulnerability. In this example, the attacker sends a POST request with malicious payload to the vulnerable component.

POST /phomebak.php HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_payload": "..." }

This payload then triggers the vulnerability and allows the attacker to execute arbitrary code on the victim’s system.

Mitigation Guidance

Users and administrators are strongly recommended to apply the patch provided by the vendor as soon as possible. In cases where immediate patching is not possible, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. These measures can help detect and block attempts to exploit this vulnerability, providing an additional layer of security for the affected systems.
However, these are merely temporary solutions. The only way to fully secure the system from this vulnerability is to apply the provided patch and keep the system up-to-date with all the latest security updates.