Unrated severityNVD Advisory· Published Apr 28, 2025· Updated Nov 19, 2025
GFI MailEssentials < 21.8 MultiNode Insecure Deserialization
CVE-2025-34491
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.
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-multinode-insecure-deserializationmitrethird-party-advisory
News mentions
0No linked articles in our index yet.