CVE-2026-21513

Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network...

CVE-2026-21513

CVE-2026-21513 is a security feature bypass vulnerability in the MSHTML Framework. Affected component: MSHTML/MSHTML Framework used by Windows’ browsing/rendering stack. Root cause details are described in vendor advisories and security blogs as a protection mechanism bypass that can be triggered...

CVE-2026-21513 MSHTML Framework Security Feature Bypass Vulnerability

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CISA Adds Six Known Exploited Vulnerabilities to Catalog

CISA has added six new vulnerabilities to its Known Exploited Vulnerabilities KEV Catalog, based on evidence of active exploitation. CVE-2026-21510link is external Microsoft Windows Shell Protection Mechanism Failure Vulnerability CVE-2026-21513link is external Microsoft MSHTML Framework Security...