CVE-2026-21510
high-risk
Published 2026-02-10
Protection mechanism failure in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
Do I need to act?
~
3.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10
High
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (2)
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-...
65
/ 100
high-risk
Severity
30/34 · Critical
Exploitability
14/34 · Moderate
Exposure
21/34 · High