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.

INFO

Published Date :

2025-04-28T19:20:02.027Z

Last Modified :

2025-11-19T01:25:57.239Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2025-34491 vulnerability.

Vendors Products
Gfi
  • Mailessentials
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-34491.

URL Resource
https://frycos.github.io/vulns4free/2025/04/28/mailessentials.html cve-icon cve-icon
https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases cve-icon cve-icon
https://www.vulncheck.com/advisories/gfi-mailessentials-multinode-insecure-deserialization cve-icon cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact