| Title | IM-Magic Partition Resizer Kernel Driver MDA_NTDRV.sys 7.9.0 Local Privilege Escapation |
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| Description | IM-Magic Partition Resizer Free Portable includes MDA_NTDRV.sys, a raw disk forwarding driver that exposes \\.\MDA_NTDRV\<disk>. A standard local user can open this device and perform raw reads and writes against a caller-selected physical disk number.
In the validation below, the standard user could not directly read or write an administrator-only flag file and could not directly open the underlying raw disk. The same user then read the flag's NTFS data clusters through \\.\MDA_NTDRV\1, and also overwrote those clusters through the driver. Administrator readback confirmed that the protected flag file content changed to the attacker's marker.
An unprivileged user can exploit arbitrary read/write primitives over protected file resources to achieve local privilege escalation. |
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| Source | ⚠️ https://winslow1984.com/books/cve-collection/page/im-magic-partition-resizer-790-kernel-driver-mda-ntdrvsys-local-privilege-escalation |
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| User | winslow1984 (UID 79140) |
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| Submission | 05/22/2026 07:39 (29 days ago) |
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| Moderation | 06/20/2026 11:41 (29 days later) |
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| Status | Accepted |
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| VulDB entry | 372524 [IM-Magic Partition Resizer up to 7.9.0 Kernel Driver MDA_NTDRV.sys access control] |
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| Points | 20 |
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