Local privilege escalation via unrestricted raw disk access
Published Jun 21, 2026 · Updated Jun 21, 2026
Improper access control in IM-Magic Partition Resizer 7.9.0 and earlier allows local users to gain elevated privileges through its kernel driver. The MDA_NTDRV.sys device accepts raw read and write requests for a caller-selected physical disk without enforcing Windows access checks. A standard local user can bypass file ACLs to disclose or tamper with protected on-disk data, providing primitives for local privilege escalation.
Summary
What happened
Improper access control in IM-Magic Partition Resizer 7.9.0 and earlier allows local users to gain elevated privileges through its kernel driver. The MDA_NTDRV.sys device accepts raw read and write requests for a caller-selected physical disk without enforcing Windows access checks. A standard local user can bypass file ACLs to disclose or tamper with protected on-disk data, providing primitives for local privilege escalation.
The record
- CVE
- CVE-2026-12784
- Published
- Jun 21, 2026
- Updated
- Jun 21, 2026
- Vendor
- IM-Magic Inc.
- Product
- IM-Magic Partition Resizer
- Classifications
- CWE-266, CWE-284, T1068, T1006
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 21, 2026CVE publishedPublication date reported by the CVE source.
- Jun 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7.0
- Affected versionversion=7.1
- Affected versionversion=7.2
- Affected versionversion=7.3
- Affected versionversion=7.4
- Affected versionversion=7.5
- Affected versionversion=7.6
- Affected versionversion=7.7
- Affected versionversion=7.8
- Affected versionversion=7.9.0
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- MDA_NTDRV.sys raw-disk read/write proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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