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CVE-2025-34491

HIGH CVSS: 8.8 Published: 2025-04-28 Modified: 2026-06-17

Description

GFI MailEssentials prior to version 21.8 is vulnerable to a .NET deserialization issue. A remote and authenticated attacker can execute arbitrary code by sending crafted serialized .NET when joining to a Multi-Server setup.

Affected Platforms

Gfi Mailessentials

Weakness Type

CWE-502, CWE-502

References