VULNERABILITY INTELLIGENCE

CVE-2026-21513

CVSS score8.8 HIGH
EPSS probability15.85%
CISA KEVKnown exploited vulnerability
Published2026-02-10
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability

Vendor / product: Microsoft / Windows

Description

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

Weakness classification

  • secure@microsoft.com: CWE-693

Primary references