CVE-2025-34491: GFI MailEssentials prior to version 21.8 is vulnerable to a .NET deserialization issue. A remote and authenticated attacker can execute arbitrary code by…

PriorityP260high8.8CVSS 3.1

AVNACLPRLUINSUCHIHAH

EPSS

0.74%

50.1th percentile

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

1 ranges

Vendor	Product	Version range	Fixed in
gfi	mailessentials	< 21.8	21.8

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