ProxyShell

lore

security

A 2021 Exchange exploit chain related to ProxyLogon.

ProxyShell chained three Exchange vulnerabilities to reach remote code execution, and like ProxyLogon it was heavily exploited by multiple threat actors. Together they made Exchange patching an urgent priority that year.

Also known as: ProxyShell, CVE-2021-34473

Sources

CVE-2021-34473 (2021)

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