CVE-2025-34421CWE-427

CVE-2025-34421

High · published December 10, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
8.9
In the wild
Unconfirmed
What it is

🚨 An unsafe DLL loading vulnerability in MailEnable allows local attackers to run arbitrary code with just a single malicious file! ⚡ Think of it like a restaurant kitchen that blindly follows orders without checking the ingredients. If an insider sneaks in a dangerous recipe that the chefs trust, it could lead to a disastrous meal for everyone! An attacker with write access to the MailEnable installation directory could plant a rogue MEAISP.DLL, leading to arbitrary code execution. This means they could manipulate the system with the same privileges as the MailEnable process, potentially wreaking havoc on your server. It's absolutely devastating if exploited!

Put simply

Think of it like a restaurant kitchen that blindly follows orders without checking the ingredients. If an insider sneaks in a dangerous recipe that the chefs trust, it could lead to a disastrous meal for everyone! This vulnerability arises because MailEnable fails to validate the integrity of the MEAISP.DLL file before loading it. As a result, a local attacker can place a malicious DLL in the installation directory, causing the application to execute unauthorized code.

What to do

An attacker with write access to the MailEnable installation directory could plant a rogue MEAISP.DLL, leading to arbitrary code execution. This means they could manipulate the system with the same privileges as the MailEnable process, potentially wreaking havoc on your server. It's absolutely devastating if exploited! To protect against this flaw, immediately upgrade MailEnable to version 10.54 or later. Additionally, ensure that only trusted users have write access to the installation directory, and consider implementing stricter access controls to prevent unauthorized modifications. 🛡️ You've got this! With these steps, you can secure your MailEnable installation and keep your environment safe. 🎉

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00196 · 8.9th percentile
Weakness
CWE-427 · Uncontrolled Search Path Element
Published
2025-12-10T21:16Z
Affected products (1)
ProductVersionsFixed in
mailenable/mailenable< 10.5410.54
References (3)
EPSS history
Timeline
  • 10 DEC 16:10Z
    MailEnable < 10.54 DLL Hijacking via Unsafe Loading of MEAISP.DLL
    cvelistv5