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CVE-2021-26857
HIGH · CVSS 7.8
⚠ KEV — EXPLOITED
EPSS exploitation probability: 100%
⚠ Listed in the CISA Known Exploited Vulnerabilities catalog — actively exploited.
Published 2021-11-03 · Last modified 2026-08-12T05:17:39.080
Summary
Microsoft Exchange Server Remote Code Execution Vulnerability
Affected products
Microsoft — Exchange Server
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References
This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.