CVE-2026-83790: Windows Hello Elevation of Privilege Vulnerability
Use after free in Windows Hello allows an authorized attacker to elevate privileges locally.
Other sources
Windows Hello Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7807Patch KB5126657
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Systems running Microsoft Windows 10 or Microsoft Windows 11 with Microsoft Windows Hello are listed as affected. Exploitation requires local access and authorization on the target system.
What level of access does an attacker need?
An attacker must already be an authorized local user. The vector is local, no user interaction is required, and the attack complexity is rated high.
What could a successful exploit allow?
A successful use-after-free exploit could allow the local authorized attacker to elevate privileges. The reported impact includes high confidentiality, integrity, and availability effects.