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Microsoft Windows Common Log File System Out-Of-Bounds Read Information Disclosure Vulnerability

November 13th, 2025

Vulnerability Details

This vulnerability allows local attackers to disclose sensitive information on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the clfs.sys driver. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated memory region. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel.

Additional Details

Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-60709

Disclosure Timeline

  • 2025-07-25 - Vulnerability reported to vendor
  • 2025-11-13 - Coordinated public release of advisory
  • 2025-11-13 - Advisory Updated

Credit

Anonymous

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