---
id: CVE-2026-83907
title: >-
  Exposure of sensitive system information to an unauthorized control sphere in
  Windows Hello allows an authorized attacker to disclose information locally.
summary: >-
  Exposure of sensitive system information to an unauthorized control sphere in
  Windows Hello allows an authorized attacker to disclose information locally.
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-497
vendor: Microsoft
product: Windows 10 Version 21H2
affected:
  - windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7807
  - windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19044.7807
  - windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7652
  - windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7652
  - windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.9711
  - windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.9711
  - windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.3231
  - windows_11_version_26h2 >= 10.0.26300.0 < 10.0.26300.9711
published: '2026-10-13'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T16:21:45.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-83907'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83907'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00954
epssPercentile: 0.61198
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-13T20:19:30.570561Z'
ingestedAt: '2026-10-13T19:43:29.137Z'
---

## Overview

Exposure of sensitive system information to an unauthorized control sphere in Windows Hello allows an authorized attacker to disclose information locally.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.