CVE-2026-20819CWE-822

CVE-2026-20819

Medium · published January 13, 2026

CVSS v3.1
5.5
EPSS
1%
Percentile
44.8
In the wild
Unconfirmed
What it is

Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to disclose information locally.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00543 · 44.8th percentile
Weakness
CWE-822 · Untrusted Pointer Dereference
Published
2026-01-13T23:16Z
Affected products (3)
ProductVersionsFixed in
microsoft/windows_11_23h2< 10.0.22631.649110.0.22631.6491
microsoft/windows_11_24h2< 10.0.26100.762310.0.26100.7623
microsoft/windows_11_25h2< 10.0.26200.762310.0.26200.7623
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20819 · [email protected]
EPSS history
Timeline
  • 13 JAN 17:56Z
    Windows Virtualization-Based Security (VBS) Information Disclosure Vulnerability
    cvelistv5