CVE-2025-34489

HIGH

GFI Mailessentials < 21.8 - Insecure Deserialization

Title source: rule

Description

GFI MailEssentials prior to version 21.8 is vulnerable to a local privilege escalation issue. A local attacker can escalate to NT Authority/SYSTEM by sending a crafted serialized payload to a .NET Remoting Service.

References (3)

Scores

CVSS v3 7.8
EPSS 0.0013
EPSS Percentile 32.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

CWE
CWE-502
Status published

Affected Products (1)

gfi/mailessentials < 21.8

Timeline

Published Apr 28, 2025
Tracked Since Feb 18, 2026