CVEvulnerability
CVE-2025-34491
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2025-04-28
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-502
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.
Affected configurations
• gfi mailessentials (< 21.8)
Related
Weakness · CWE (1)
- CWE-502 Deserialization of Untrusted Data weakness
References
- https://frycos.github.io/vulns4free/2025/04/28/mailessentials.html Exploit
- https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases Release Notes
- https://www.vulncheck.com/advisories/gfi-mailessentials-multinode-insecure-deserialization www.vulncheck.com