CVE-2026-21513: Microsoft MSHTML Framework Protection Mechanism Failure

Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability. Microsoft MSHTML Framework contains a protection mechanism failure vulnerability that could allow an unauthorized attacker to bypass a security feature over a network.

• CISA KEV-listed (remediation due 2026-03-03)
• EPSS 15.6% (96.7% percentile)
• CVSS 8.8 high

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Read the full analysis on IntelFusions