All CVE records
CVE-2026-21513 — Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability
CISA KEV listed
Added February 10, 2026 Remediate by March 3, 2026
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.
Notes
https://msrc.microsoft.com/update-guide/advisory/CVE-2026-21513 ; https://nvd.nist.gov/vuln/detail/CVE-2026-21513
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