Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability - CVE-2026-21513
Affected Systems:
Microsoft Windows
Executive Summary
Microsoft MSHTML Framework contains a protection mechanism failure vulnerability that could allow an unauthorized attacker to bypass a security feature over a network.
CVSS Score: 9.0/10.0
Severity: CRITICAL
Affected Systems
- Microsoft Windows
Detection & Mitigation
- Apply vendor patches as soon as available
- Monitor for indicators of compromise
- Review vendor advisories for specific guidance