CVE-2025-34396 HIGH

CVE-2025-34396: MailEnable < 10.54 DLL Hijacking via Unsafe Loading of MEAINFY.DLL

Vendor Mailenable
Product MailEnable
Weakness CWE-427
Published December 9, 2025
Last update May 14, 2026

CVSS base score

8.5/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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 MEAINFY.DLL from its application directo without sufficient integrity validation or secure search order. If the DLL is missing or attacker-writable locations in the search path are used, a local attacker with write permissions to the directory can plant a malicious MEAINFY.DLL. When the executable is launched, it loads the attacker-controlled library and executes code with the privileges of the process, enabling local privilege escalation when run with elevated rights.

Key dates

02Disclosure timeline

December 9, 2025 CVE published
May 14, 2026 Record updated