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CVE coverage

CVE-2021-26858

CVSS 7.8 Actively exploited (KEV) 3 detections found
View on NVD →
Microsoft Exchange Server Remote Code Execution Vulnerability

Detection rules

Source Rule Status Updated
elastic Microsoft Exchange Server UM Writing Suspicious Files production 2026-09-18
sigma ProxyLogon Reset Virtual Directories Based On IIS Log test 2023-05-08
sigma CVE-2021-26858 Exchange Exploitation test 2022-10-09