Critical Vulnerability Found in EnvíaloSimple Email Marketing Software – Update Now

CVSScvssV3_1: 9.6

Researchers have discovered a serious deserialization of untrusted data vulnerability in EnvíaloSimple, a popular email marketing and newsletters tool.

Deserialization of untrusted data issues occur when an application takes untrusted input that was serialized, unserializes it, and without further validation, treats it as trusted data. This allows an attacker to potentially execute arbitrary code by crafting a malicious payload.

In EnvíaloSimple, an attacker could exploit this vulnerability by sending a specially crafted serialized object to the application. When unserialized, this could allow the attacker to execute code of their choice on the server with the privileges of the EnvíaloSimple application.

This vulnerability has been given a CVSS score of 9.6 out of 10, meaning it is considered highly critical. An attacker could potentially gain remote code execution and take complete control over affected EnvíaloSimple servers.

All EnvíaloSimple users are urged to update to the latest version immediately to patch this vulnerability. Administrators should also carefully review server configurations and access controls. Monitoring servers for unusual activity is also recommended.

While updates are made available, extra caution is advised when using EnvíaloSimple and opening emails or attachments from unknown sources. This will help prevent attackers from exploiting the vulnerability before it is patched.