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CVE-2023-21529

🔥 Known Exploited (CISA KEV)HIGH

8.8

CVSS Severity Score

EPSS Score0.0000%

EPSS Percentile0.00th

Published2023-02-14

Last Modified2026-06-17

Data SourcesNVDCISA KEV

Vulnerability Description

Microsoft Exchange Server Remote Code Execution Vulnerability

Affected Platforms (CPE)

📦

Microsoft

Exchange Server

= 2013= 2016= 2019

References & Advisories

🔗 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21529

🔗 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21529

🔗 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21529

🔗 https://www.microsoft.com/en-us/security/blog/2026/04/06/storm-1175-focuses-gaze-on-vulnerable-web-facing-assets-in-high-tempo-medusa-ransomware-operations/

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