---
id: CVE-2025-34423
title: >-
  MailEnable versions prior to 10.54 contain an unsafe DLL loading vulnerability
  that can lead to local arbitrary code execution
summary: >-
  MailEnable versions prior to 10.54 contain an unsafe DLL loading vulnerability
  that can lead to local arbitrary code execution. The MailEnable administrative
  executable attempts to load MEAIAU.DLL from its installation directory without
  …
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-427
vendor: mailenable
product: mailenable
affected:
  - mailenable < 10.54
patched:
  - mailenable 10.54
published: '2025-12-10'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T23:10:00.463'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-34423'
references:
  - url: 'https://mailenable.com/Standard-ReleaseNotes.txt'
    label: disclosure@vulncheck.com
  - url: 'https://www.mailenable.com/'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/mailenable-dll-hijacking-via-unsafe-loading-of-meaiau-dll
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00168
epssPercentile: 0.05375
ingestedAt: '2026-09-25T23:21:16.916Z'
---

## Overview

MailEnable versions prior to 10.54 contain an unsafe DLL loading vulnerability that can lead to local arbitrary code execution. The MailEnable administrative executable attempts to load MEAIAU.DLL from its installation directory without sufficient integrity validation or a secure search order. A local attacker with write access to that directory can plant a malicious MEAIAU.DLL, which is then loaded on execution, resulting in attacker-controlled code running with the privileges of the process.

## Affected

- `mailenable < 10.54`

## Remediation

Upgrade past the affected range:

- `mailenable 10.54`