CVE-2026-20804
HighCVSS 7.7Exploitation Probability (EPSS)
Low risk40th percentile - higher than 40% of all known CVEs
Summary
Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.
Risk Assessment
An unauthorized attacker can modify system settings or data, potentially leading to integrity compromise.
Recommendation
Install the latest security updates from Microsoft for Windows Hello. Restrict access to Windows Hello features for unauthorized users.
Other vulnerabilities in Windows Hello
See all- CVE-2026-61928Medium
Cleartext storage of sensitive information in Windows Hello allows an authorized attacker to perform tampering locally.
- CVE-2026-20852High
An incorrect privilege assignment vulnerability in Windows Hello allows an unauthorized attacker to perform tampering locally.
- CVE-2021-42288Medium
Security feature bypass vulnerability in Windows Hello. An attacker could bypass authentication mechanisms.
- CVE-2021-34466Medium
A vulnerability in Windows Hello allows a security feature bypass. An attacker could exploit this flaw to bypass authentication mechanisms.
Original NVD description (English source)
Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.