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UNKNOWNKNOWN EXPLOITEDRANSOMWARE: KNOWN

CVE-2021-42321

Microsoft Exchange Server Remote Code Execution Vulnerability

Published
2021-11-17
Modified
2026-07-31
Sources
cisa-kev

Summary

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

References

Includes data from the CISA Known Exploited Vulnerabilities catalog.

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