Microsoft
Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
CVE-2026-40409 Jun 9, 2026 Source: Vendor
Source of record
The credited names below are quoted verbatim from the vendor's own advisory:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40409
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Credited
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CVE-2026-40409
unclaimed
Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
Credited as Thanatos Tian (PolyU) of Diffract
CVE-2026-40409
unclaimed
Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
Credited as R4nger with Kunlun Lab
CVE-2026-40409
unclaimed
Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
Credited as Zhiniang Peng with HUST
CVE-2026-40409
unclaimed
Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
Credited as @2st___ of Diffract
CVE-2026-40409
unclaimed
Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
Credited as 021w
CVE-2026-40409
unclaimed
Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
Credited as 1nv0k3r and M00N with BeFunLab