MSHTML Framework 0-Day Vulnerability Let Attackers Security Feature over Network
ID: 2eb97af0-fb8e-579c-8a03-37cce5fab6aa
STIX ID: report--2eb97af0-fb8e-579c-8a03-37cce5fab6aa
Feed Name: cybersecurityNews.com
Threat Score
Microsoft released an urgent patch for CVE-2026-21513, a critical MSHTML (Trident) zero-day actively exploited to bypass Windows security prompts via crafted HTML and .lnk files; CVSS 8.8. The flaw affects supported Windows 10/11 and Server editions, is network-deliverable via social engineering, and has been added to CISA's Known Exploited Vulnerabilities list — organizations are advised to prioritize immediate patching.
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