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Microsoft security patch release for CVE-2026-21262

Security Patch Release
First reported
Last updated
Happening score
H score 45
2 unique sources, 2 articles

Summary

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Microsoft's March 2026 Patch Tuesday delivers fixes for 79 flaws, including 2 publicly disclosed zero-days and several Critical issues across SQL Server, .NET, and Microsoft Office. The release includes 2 Office remote code execution bugs that can be triggered via the preview pane, plus an Excel information disclosure flaw that could let an attacker exfiltrate data through Microsoft Copilot. The two zero-days are CVE-2026-21262 in SQL Server and CVE-2026-26127 in .NET. Administrators should prioritize deployment because the bundle covers both privilege escalation and code execution risk.

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Timeline

  1. 10.03.2026 19:49 2 articles · 4mo ago

    Microsoft March 2026 Patch Tuesday release

    Initial Disclosure

    Microsoft released March 2026 Patch Tuesday security updates for 79 flaws, including two publicly disclosed zero-days: CVE-2026-21262 in SQL Server, which can grant SQLAdmin privileges, and CVE-2026-26127 in .NET, which can be used for denial of service. The bundle also fixed two Microsoft Office remote code execution bugs, CVE-2026-26110 and CVE-2026-26113, exploitable through the preview pane, and an Excel information disclosure flaw, CVE-2026-26144, that could enable data exfiltration via Microsoft Copilot.

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