74/75 sources · synced 09:46 UTC Customize Public mode
CVE-2026-21510CISA KEV

Microsoft Windows Shell Protection Mechanism Failure Vulnerability

CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.

CISA KEV Check MSRC

CISA catalog record

Microsoft Windows Shell contains a protection mechanism failure vulnerability that could allow an unauthorized attacker to bypass a security feature over a network.

Product
Windows
Added to KEV
10 Feb 2026
Federal remediation due
3 Mar 2026
Known ransomware use
Not reported
ChangeIntel is an independent tool and is not affiliated with or endorsed by Microsoft. Microsoft, Windows, Microsoft 365, Azure, and related names are trademarks of the Microsoft group of companies. Data comes from public sources listed on Sources; every item links to its original page. Dates and statuses can change after they are read. Privacy: no accounts or analytics, and your preferences stay in your browser. Terms: information, not advice. Built by Evotec. This is the public demo. It can also run on your own server, with your Microsoft 365 tenant and device data kept inside your network; Evotec can help you deploy and extend it.