IM-Magic Partition Resizer Kernel Driver MDA_NTDRV.sys access control

published 2026-06-21 4 mo ago modified 2026-10-25 14 d ago also EUVD-2026-38149

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits: 0; none known

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.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 4 mo ago (2026-06-22)

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

winslow1984.com https://winslow1984.com/books/cve-collection/page/im-magic-partition-resizer-790-kernel-driver-mda-ntdrvsys-local-privilege-escalation referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.5	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
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
CNA	3.0	7.8	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
CNA	2.0	6.8	AV:L/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
CNA	4.0	7.1	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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	2.0	6.8	AV:L/AC:L/Au:S/C:C/I:C/A:C

Affected products

IM-Magic Partition Resizer

Classification

Weakness

CWE-284 Improper Access Control
CWE-266 Incorrect Privilege Assignment

References

winslow1984.com /books/cve-collection/page/im-magic-partition-resizer-790-kernel-driver-mda-ntdrvsys-local-privilege-escalatio
exploit
vuldb.com /vuln/372524
vdb-entry
vuldb.com /vuln/372524/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-12784
third-party-advisory
vuldb.com /submit/835613
third-party-advisory

Sources

CVE List CVE-2026-12784
NVD CVE-2026-12784

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary