CVE-2026-70142: Windows Update Service Elevation of Privilege Vulnerability
Untrusted search path in Windows Update Service allows an authorized attacker to elevate privileges locally.
Other sources
Windows Update Service 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 10.0.26100.33650Patch KB5126646 - 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 10.0.26200.9711Patch 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 10.0.26300.9711Patch 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 can exploit this vulnerability?
An attacker must already be authorized on the affected system and have local access. The issue affects Microsoft Windows 11 and Microsoft Windows Server 2025.
What level of access could exploitation provide?
Successful exploitation can elevate an authorized local attacker’s privileges. The supplied severity vector indicates high impacts to confidentiality, integrity, and availability.
Is user interaction required for exploitation?
No user interaction is required according to the supplied severity vector. The attacker must still have local access and low privileges on the system.