CVE-2025-34491

high

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.

References

Advisories
Exploits

https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases

https://frycos.github.io/vulns4free/2025/04/28/mailessentials.html

Details

Source: Mitre, NVD

Published: 2025-04-28

Updated: 2025-04-29

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H