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High · 7.4 Known exploited · Ransomware Public exploit CVE-2018-8581 EUVD-2018-20198GHSA-h9jh-6fmr-vvc6

An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka "Microsoft Exchange Server Elevation of Privilege Vulnerab…

Published Nov 14, 2018 · Updated Oct 21, 2025 · Assigned by microsoft

Vendor: Microsoft Product: Microsoft Exchange Server

Description

An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka "Microsoft Exchange Server Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.

Affected products

VendorProductAffectedFixed
Microsoft Microsoft Exchange Server 2010, 2013, 2016, 2019 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 3 repositories

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References