CVE-2025-34491
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| GFI | MailEssentials | 0 < 21.8 | affected |
Weaknesses
- CWE-502: CWE-502 Deserialization of Untrusted Data
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: total
References
- https://frycos.github.io/vulns4free/2025/04/28/mailessentials.html
- https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases
- https://www.vulncheck.com/advisories/gfi-mailessentials-multinode-insecure-deserialization
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