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UNKNOWNKNOWN EXPLOITEDRANSOMWARE: KNOWN

CVE-2023-21529

Microsoft Exchange Server Deserialization of Untrusted Data Vulnerability

Published
2026-04-13
Modified
2026-07-31
Sources
cisa-kev

Summary

Microsoft Exchange Server contains a deserialization of untrusted data that allows an authenticated attacker to achieve remote code execution.

References

Includes data from the CISA Known Exploited Vulnerabilities catalog.

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