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-2026-83926Medium
Improper certificate validation in Windows Hello allows an authorized attacker to bypass a security feature locally.
- CVE-2026-83907Medium
Exposure of sensitive system information to an unauthorized control sphere in Windows Hello allows an authorized attacker to disclose information locally.
- CVE-2026-83853High
Use after free in Windows Hello allows an authorized attacker to elevate privileges locally.
- CVE-2026-83849Medium
Out-of-bounds read in Windows Hello allows an authorized attacker to disclose information locally.
- CVE-2026-83790High
Use after free in Windows Hello allows an authorized attacker to elevate privileges locally.
- CVE-2026-83740High
Use after free in Windows Hello allows an authorized attacker to elevate privileges locally.
- CVE-2026-70280Medium
Incorrect authorization in Windows Hello allows an authorized attacker to bypass a security feature locally.
- CVE-2026-81354High
Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally.
- CVE-2026-72980Medium
An uncontrolled search path element in Windows Hello allows an authorized attacker to bypass a security feature locally.
- CVE-2026-69864High
A use-after-free vulnerability in Windows Hello allows an authorized attacker to elevate privileges locally.
Original NVD description (English source)
Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS