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Microsoft Issues Urgent Patch for Windows Shell Zero-Day Vulnerability

Microsoft Issues Urgent Patch for Windows Shell Zero-Day Vulnerability

First seen 11 Feb 2026, 19:30 UTC

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ThreatCluster AI
ThreatCluster March 12, 2026 at 16:10 UTC

On February 10, 2026, Microsoft released an urgent patch for a zero-day vulnerability in Windows Shell, identified as CVE-2026-21510. This vulnerability is actively exploited, affecting users of Windows operating systems. Organizations are advised to apply the patch immediately to mitigate potential risks.

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Updated 183d ago How this analysis works

Timeline

2026-02-10
CVE-2026-21510 published
2026-02-10
CVE-2026-21510 added to CISA KEV (active exploitation)
2026-02-11
Microsoft sounded the alarm and released a patch

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