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Microsoft Patches Critical Zero-Click Outlook Vulnerability Threatening Enterprises

·Source: SecurityWeek

Updated:

Executive Summary

CVE-2026-40361 is similar to a vulnerability found a decade ago, BadWinmail, which at the time was dubbed an “enterprise killer”. The post Microsoft Patches Critical Zero-Click Outlook Vulnerability Threatening Enterprises appeared first on SecurityWeek .

Analysis

CVE-2026-40361 is similar to a vulnerability found a decade ago, BadWinmail, which at the time was dubbed an “enterprise killer”. The post Microsoft Patches Critical Zero-Click Outlook Vulnerability Threatening Enterprises appeared first on SecurityWeek .

Indicators of Compromise (1)

CVE (1)
CVE-2026-40361
NVDMITRE CVE
Source Attribution

Originally published by SecurityWeek on May 13, 2026.

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