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Microsoft Issues Urgent Patch for Windows Shell Zero-Day Vulnerability
First seen 11 Feb 2026, 19:30 UTC
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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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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