CVE-2026-69743: Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
Other sources
Windows Program Compatibility Assistant 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 10.0.26300.9711Patch KB5127648 - 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 10.0.22631.7652Patch KB5126653 - 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 10.0.26200.9711Patch KB5127648
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker must already be authorized on the affected system and able to execute an attack locally. The available data does not indicate that remote exploitation or user interaction is required.
Which systems are identified as affected?
The listed affected products are Microsoft Windows 11 and Microsoft Windows Server 2025. No specific editions, builds, or update levels are provided.
What is the likely security impact of successful exploitation?
Successful exploitation allows local elevation of privilege. The supplied vector also indicates high potential impact to confidentiality, integrity, and availability.
Is exploitation expected to be straightforward?
The provided assessment marks attack complexity as high, meaning exploitation is expected to require conditions or techniques beyond simple local code execution. The data does not describe those conditions.