PT-2025-18105 · Gfi · Gfi Mailessentials

Frycos · Published 1999-01-01 · Updated 2025-05-10 · CVE-2025-34489

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions GFI MailEssentials versions prior to 21.8

Description A local privilege escalation issue exists, allowing a local attacker to escalate to NT Authority/SYSTEM by sending a crafted serialized payload to a .NET Remoting Service.

Recommendations For GFI MailEssentials versions prior to 21.8, update to version 21.8 or later to resolve the issue. As a temporary workaround, consider restricting access to the .NET Remoting Service to minimize the risk of exploitation.

Exploit

Fix

LPE

RCE

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2025-34489

DOTNETREMOTINGCHECK

Affected Products

Gfi Mailessentials

References · 12

• 🔥 https://frycos.github.io/vulns4free/2025/04/28/mailessentials.html · Exploit
• https://osv.dev/vulnerability/CVE-2025-34489 · Vendor Advisory
• https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-34489 · Security Note
• https://t.me/cvenotify/121630 · Telegram Post
• https://twitter.com/cybercronai/status/1917319328602464706 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1916956882696065285 · Twitter Post
• https://t.me/cvetracker/22554 · Telegram Post
• https://twitter.com/CVEnew/status/1916933693639430284 · Twitter Post
• https://twitter.com/cybercronai/status/1917226250474606981 · Twitter Post
• https://vulncheck.com/advisories/gfi-mailessentials-local-privilege-escalation · Note
• https://t.me/cvedetector/23937 · Telegram Post