VULNERABILITY INTELLIGENCE

CVE-2025-34491

CVSS score8.8 HIGH
EPSS probability0.96%
CISA KEVNot currently listed
Published2025-04-28
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-502
  • nvd@nist.gov: CWE-502

Primary references