CVE-2026-69820: Windows Hello Elevation of Privilege Vulnerability
Heap-based buffer overflow 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 10.0.26100.9445Patch KB5124008 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9445Patch KB5124008 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19045.7725Patch KB5122878 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7582Patch KB5122880 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2954Patch KB5124012 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7725Patch KB5122878
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this vulnerability?
The attacker must already be authorized on the affected system and exploit the issue locally. The available data does not indicate that remote exploitation or user interaction is required.
Which systems are identified as affected?
Microsoft Windows 10 and Microsoft Windows 11 are identified as affected software. No specific editions, builds, or update versions are provided.
What is the potential impact after successful exploitation?
A successful local exploit can elevate the authorized attacker’s privileges. The supplied severity vector indicates high potential impact to confidentiality, integrity, and availability.