CVE-2025-34491CWE-502

GFI MailEssentials < 21.8 MultiNode Insecure Deserialization

High · published April 28, 2025

CVSS v3.1
8.8
EPSS
1%
Percentile
60.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00947 · 60.8th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2025-04-28T19:20Z
EPSS history
Timeline
  • 28 APR 19:20Z
    GFI MailEssentials < 21.8 MultiNode Insecure Deserialization
    cvelistv5