CVE-2026-56172CWE-416

CVE-2026-56172

High · published September 8, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
25.4
In the wild
Unconfirmed
What it is

Use after free in Windows VHD miniport driver allows an authorized attacker to elevate privileges locally.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00333 · 25.4th percentile
Weakness
CWE-416 · Use After Free
Published
2026-09-08T22:17Z
Affected products (19)
ProductVersionsFixed in
microsoft/windows_10_1809< 10.0.17763.924510.0.17763.9245
microsoft/windows_10_1809< 10.0.17763.924510.0.17763.9245
microsoft/windows_10_21h2< 10.0.19044.772510.0.19044.7725
microsoft/windows_10_21h2< 10.0.19044.772510.0.19044.7725
microsoft/windows_10_21h2< 10.0.19044.772510.0.19044.7725
microsoft/windows_10_22h2< 10.0.19045.772510.0.19045.7725
microsoft/windows_10_22h2< 10.0.19045.772510.0.19045.7725
microsoft/windows_10_22h2< 10.0.19045.772510.0.19045.7725
microsoft/windows_11_23h2< 10.0.22631.758210.0.22631.7582
microsoft/windows_11_23h2< 10.0.22631.758210.0.22631.7582
microsoft/windows_11_24h2< 10.0.26100.944510.0.26100.9445
microsoft/windows_11_24h2< 10.0.26100.944510.0.26100.9445
microsoft/windows_11_25h2< 10.0.26200.944510.0.26200.9445
microsoft/windows_11_25h2< 10.0.26200.944510.0.26200.9445
microsoft/windows_11_26h1< 10.0.28000.295410.0.28000.2954
microsoft/windows_11_26h1< 10.0.28000.295410.0.28000.2954
microsoft/windows_server_2019< 10.0.17763.924510.0.17763.9245
microsoft/windows_server_2022< 10.0.20348.562210.0.20348.5622
microsoft/windows_server_2025< 10.0.26100.3343810.0.26100.33438
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56172 · [email protected]
EPSS history
Timeline
  • 10 SEP 03:17Z
    EPSS moved — → 0%
    epss
  • 08 SEP 17:14Z
    Windows VHD miniport driver Elevation of Privilege Vulnerability
    cvelistv5