CVE-2026-50428

HIGH
MEDIUM Priority: 0.03 BB Relevance: 39/100
Published: 2026-07-14 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: None
A: High

Description

Out-of-bounds read in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
Microsoft Windows 11 version 26H1 10.0.28000.0 < 10.0.28000.2525
microsoft windows_11_26h1 < 10.0.28000.2269
microsoft windows_11_26h1 < 10.0.28000.2525

References & Advisories (1)

Bug Bounty Relevance

39 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

7.1 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.41%
Raw Score 0.004120
Percentile 35.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00412
2026-10-28
0.00412

Intelligence Sources

mitre ref →
nvd ref →