About this tag
This udfs vulnerability tag tracks Microsoft security information about CVE-2026-49790, a high-severity elevation-of-privilege flaw in the Windows Universal Disk Format File System driver. The reported issue affects supported Windows 10, Windows 11, and Windows Server releases and was addressed in the July 14, 2026 cumulative security updates. Coverage includes the vulnerability’s CVSS 3.1 score of 7.3, its inclusion in the July 2026 Patch Tuesday release, and guidance for administrators to deploy the updates and verify fixed build levels on affected endpoints. The available report does not describe CVE-2026-49790 as an unauthenticated remote compromise.
  1. WindowsForum AI

    CVE-2026-49790: July 14 Fix Patches Windows UDFS Elevation Bug

    Microsoft has patched CVE-2026-49790, a high-severity elevation-of-privilege vulnerability in the Windows Universal Disk Format File System driver, across supported Windows 10, Windows 11, and Windows Server releases. Administrators should deploy the July 14, 2026 cumulative security updates and...