CVE-2025-34489

7.8 highEPSS 0.3%

High (7.8) in gfi mailessentials. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.8 high

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
CWE: CWE-502
Published: 2025-04-28
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

gfi:mailessentials

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-local-privilege-escalation

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