CVE-2026-21255
moderate-risk
Published 2026-02-10
Improper access control in Windows Hyper-V allows an authorized attacker to bypass a security feature locally.
Do I need to act?
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0.04% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10
High
LOCAL
/ LOW complexity
Affected Products (15)
Affected Vendors
References (1)
45
/ 100
moderate-risk
Severity
27/34 · High
Exploitability
0/34 · Minimal
Exposure
18/34 · Moderate