Executive brief
A security vulnerability exists in the Windows Overlay Filter, a component of the Windows operating system. An attacker who already has basic access to a computer could exploit this flaw to view sensitive information that they are not authorized to see. This could lead to the exposure of private data or system secrets, though it does not allow the attacker to take control of the machine or disrupt services directly.
Technical details
An information disclosure vulnerability (CWE-200) exists in the Windows Overlay Filter component. The flaw allows an authorized user with local access to the system to disclose sensitive information to an unauthorized actor. The attack vector is local, requiring the attacker to have prior authentication (Low privileges) on the target system. Successful exploitation results in a High confidentiality impact, though integrity and availability are not affected. Microsoft has released security updates to address this issue across various versions of Windows 10, Windows 11, and Windows Server 2016.
Affected products
- Microsoft Windows 10 1607, 1809, 21H2, 22H2
- Microsoft Windows 11 24H2, 25H2, 26H1
- Microsoft Windows Server 2016 Standard and Server Core
Timeline
- 2026-07-14: disclosed: Initial publication by Microsoft and NVD
- 2026-07-14: patched: Security updates made available via Microsoft MSRC