CVE-2025-34491 | THREATINT

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.

Reserved 2025-04-15 | Published 2025-04-28 | Updated 2025-04-28 | Assigner VulnCheck

HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-502 Deserialization of Untrusted Data

Product status

Default status

unaffected

Any version before 21.8

affected

Credits

Frycos finder

References

frycos.github.io/vulns4free/2025/04/28/mailessentials.html technical-description exploit

gfi.ai/...ssentials/resources/documentation/product-releases vendor-advisory

cve.org (CVE-2025-34491)

nvd.nist.gov (CVE-2025-34491)

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