CVE-2026-20819
Medium
Description
Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to disclose information locally.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Microsoft Windows
PublishedJan 13, 2026
First seenJan 13, 2026
Weakness typeCWE-822CWE-822
How to fix
Update
- microsoft windows_11_23h210.0.22631.6491 or later
- microsoft windows_11_24h210.0.26100.7623 or later
- microsoft windows_11_25h210.0.26200.7623 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_11_23h2 | v < 10.0.22631.6491 | 10.0.22631.6491 |
| microsoft windows_11_24h2 | v < 10.0.26100.7623 | 10.0.26100.7623 |
| microsoft windows_11_25h2 | v < 10.0.26200.7623 | 10.0.26200.7623 |
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