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CVE-2021-42321CISA KEV

Microsoft Exchange Server Remote Code Execution Vulnerability

CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.

CISA KEV Check MSRC

CISA catalog record

An authenticated attacker could leverage improper validation in cmdlet arguments within Microsoft Exchange and perform remote code execution.

Product
Exchange
Added to KEV
17 Nov 2021
Federal remediation due
1 Dec 2021
Known ransomware use
Yes
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