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MSHTML Framework Zero-Day Opens Door to Network

Gbhackers •Divya • February 11, 2026

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Microsoft Issues Urgent Patch for MSHTML Framework Zero-Day Vulnerability Microsoft has released a critical security patch for a zero-day vulnerability (CVE-2026-21513) in the MSHTML Framework, which was actively exploited before the fix was available. This vulnerability allows attackers to bypass Windows security features without elevated privileges, potentially affecting millions of systems. The flaw was added to the CISA KEV list on the same day it was published. 2 sources 49

Extracted Entities

MSHTML Framework Zero-Day Opens Door to Network

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Extracted Entities

Attack Types (3)

Platforms (1)

Vulnerabilities (1)