March Patch Tuesday fixes two zero-days and 79 security flaws. 🛡️
March 2026 Patch Tuesday · 79 Vulnerabilities · 2 Publicly Disclosed Zero-Days.
@[Microsoft](urn:li:organization:1035) has released its March 2026 security update, addressing critical vulnerabilities across the Windows ecosystem. The update includes fixes for two zero-days: an elevation of privilege flaw in SQL Server (CVE-2026-21262) and a denial of service vulnerability in .NET (CVE-2026-26127).
While neither zero-day has confirmed active exploitation in the wild as of this morning, the public disclosure significantly increases the risk of rapid weaponization. The update also includes 18 remote code execution (RCE) fixes, with several labeled as critical impact for Office and Windows Graphics components.
The uncomfortable truth: Your enterprise endpoints are currently vulnerable to multiple RCE and privilege escalation paths that are now public knowledge.
→ Apply the March 2026 Microsoft security updates to all Windows endpoints and servers immediately.
→ Prioritize the patching of SQL Server and .NET environments due to the zero-day disclosures.
→ Ensure all Microsoft Office installations are updated to address critical RCE flaws in Excel and Word.
Is your automated patching cycle fast enough to deploy these critical fixes within the next 24 hours? 👇
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