CVE-2026-62775CWE-863broken-access-control

CVE-2026-62775

Medium · published August 11, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
27.4
In the wild
Unconfirmed
What it is

Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) 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
0.00350 · 27.4th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-08-11T21:18Z
Affected products (2)
ProductVersionsFixed in
microsoft/windows_11_26h1< 10.0.28000.270410.0.28000.2704
microsoft/windows_11_26h1< 10.0.28000.270410.0.28000.2704
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62775 · [email protected]
EPSS history
Timeline
  • 11 AUG 17:06Z
    Windows Container Isolation FS Filter Driver (unionfs.sys) Information Disclosure Vulnerability
    cvelistv5