Microsoft Exchange Server Remote Code Execution Vulnerability

Published Nov 3, 2021·Updated Aug 19, 2026

NVD Description

Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution. This vulnerability is part of the ProxyLogon exploit chain.

Public Exploits & PoCs2 found

[POC] CVE-2021-26857 — Proxylogon-exploit

proxylogon exploit - CVE-2021-26857

[POC] CVE-2021-26857 — ProxyLogon-Mass-RCE

Python for mass deploying payload on Microsoft Exchange Servers affected by ProxyLogon (CVE-2021-26857, CVE-2021-26855, CVE-2021-27065)

References

View on NVD Search GitHub Search Google

Get alerted for CVEs like this

Start monitoring free