Unrated severityNVD Advisory· Published Apr 28, 2025· Updated Nov 19, 2025
GFI MailEssentials < 21.8 Local Privilege Escalation
CVE-2025-34489
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2<21.8+ 1 more
- (no CPE)range: <21.8
- (no CPE)range: 0
Patches
Vulnerability mechanics
References
3- frycos.github.io/vulns4free/2025/04/28/mailessentials.htmlmitretechnical-descriptionexploit
- gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releasesmitrevendor-advisory
- www.vulncheck.com/advisories/gfi-mailessentials-local-privilege-escalationmitrethird-party-advisory
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