CVE-2025-34422CWE-427

CVE-2025-34422

High · published December 10, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
6.2
In the wild
Unconfirmed
What it is

⚡ Local attackers have a sneaky way to execute arbitrary code! MailEnable versions prior to 10.54 load a DLL without checking who it really belongs to—like a restaurant chef taking any ingredient from the delivery without checking the label. 🔥 Imagine a restaurant where the chef trusts any ingredient delivered without verifying its source. If a mischievous delivery driver swaps in spoiled food, it could ruin the whole meal! That's how this DLL loading vulnerability works—anyone with access can serve up malicious code instead. If an attacker gains access to the directory, they can replace the legitimate MEAIPC.DLL with a nasty version, leading to arbitrary code execution at the privileges of the MailEnable process. This could mean full control of the affected system—potentially devastating for your operations!

Put simply

Imagine a restaurant where the chef trusts any ingredient delivered without verifying its source. If a mischievous delivery driver swaps in spoiled food, it could ruin the whole meal! That's how this DLL loading vulnerability works—anyone with access can serve up malicious code instead. This vulnerability arises because MailEnable fails to validate the integrity of the MEAIPC.DLL it loads, allowing a local attacker to exploit this by placing a malicious DLL in the installation directory.

What to do

If an attacker gains access to the directory, they can replace the legitimate MEAIPC.DLL with a nasty version, leading to arbitrary code execution at the privileges of the MailEnable process. This could mean full control of the affected system—potentially devastating for your operations! To protect against this vulnerability, update MailEnable to version 10.54 or later immediately. Ensure that directory permissions are set correctly to restrict unauthorized write access. Regularly review and monitor your DLL files to catch any unauthorized changes. 🛡️ You've got this! By taking these steps, you’ll be a security hero in no time! 🚀

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
0.00171 · 6.2th 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 16:08Z
    MailEnable < 10.54 DLL Hijacking via Unsafe Loading of MEAIPC.DLL
    cvelistv5