Executive brief
A security vulnerability exists in Windows File Explorer, the primary tool used for managing files and folders on Windows computers. An authorized user on a system could exploit this flaw to view sensitive information they are not supposed to access. This could lead to the unauthorized disclosure of private data or internal system details.
Technical details
This vulnerability is classified as an Information Exposure (CWE-200) within Windows File Explorer. An attacker with local access and low-level privileges can exploit this flaw to disclose sensitive information without requiring user interaction. The vulnerability stems from improper access controls or data handling within the File Explorer component. Microsoft has released security updates to address this issue across various versions of Windows 10, Windows 11, and Windows Server. Exploitation requires the attacker to already have an authorized account on the target system.
Affected products
- Microsoft Windows 10 Version 1607 10.0.14393.0 to 10.0.14393.9339
- Microsoft Windows 10 Version 1809 10.0.17763.0 to 10.0.17763.9020
- Microsoft Windows 10 Version 21H2 10.0.19044.0 to 10.0.19044.7548
- Microsoft Windows 10 Version 22H2 10.0.19045.0 to 10.0.19045.7548
- Microsoft Windows 11 Version 24H2 10.0.26100.0 to 10.0.26100.8875
- Microsoft Windows 11 Version 25H2 10.0.26200.0 to 10.0.26200.8875
- Microsoft Windows 11 version 26H1 10.0.28000.0 to 10.0.28000.2269
- Microsoft Windows Server 2016 10.0.14393.0 to 10.0.14393.9339
Timeline
- 2026-07-14: disclosed
- 2026-07-14: advisory