CVE-2026-85851: Windows SmartScreen Elevation of Privilege Vulnerability
Use after free in Windows SmartScreen allows an authorized attacker to elevate privileges locally.
Other sources
Windows SmartScreen 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 10.0.26100.9711Patch KB5127648 - 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 10.0.26100.33650Patch KB5126646 - 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 10.0.22631.7652Patch KB5126653
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Systems running Microsoft Windows 11 or Microsoft Windows Server 2025 are listed as affected. Exploitation is local, so the attacker must be able to run with authorized access on the target system.
What level of access does an attacker need?
The vulnerability requires local access and low privileges. No user interaction is required for exploitation.
What is the potential impact if exploitation succeeds?
A successful exploit can allow a local authorized attacker to elevate privileges. The provided severity vector indicates high impact to confidentiality, integrity, and availability.