high
CISA KEV
CVE-2026-21513
Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability
// Description
Microsoft MSHTML Framework contains a protection mechanism failure vulnerability that could allow an unauthorized attacker to bypass a security feature over a network.
// Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Federal remediation due Mar 3, 2026 — past due
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