CVE-2026-20804
Unknown Unknown - Not Provided
Incorrect Privilege Assignment in Windows Hello Enables Local Tampering

Publication date: 2026-01-13

Last updated on: 2026-01-13

Assigner: Microsoft Corporation

Description
Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-01-13
Last Modified
2026-01-13
Generated
2026-06-16
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-14
NVD
CVE-2026-20804
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows_hello *
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-266 A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability involves incorrect privilege assignment in Windows Hello, which allows an unauthorized attacker to perform tampering on the system locally. [1]

Impact Analysis

The vulnerability can impact you by allowing an unauthorized attacker to tamper with your system locally, potentially compromising the integrity of your Windows Hello authentication. [1]

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-20804. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart