SB2025120966 - Multiple vulnerabilities in Microsoft Windows File Explorer

Description

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2025-62565)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows File Explorer. A local user can wait for a victim to perform minimal interaction with a malicious file such as selecting (single-click) or inspecting (right-click) and gain elevated privileges on the target system.

2) Race condition (CVE-ID: CVE-2025-64658)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition in Windows File Explorer. A local user can trick a victim to open a specially crafted file and escalate privileges on the system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-62565
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-64658