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Incorrect Privilege AssignmentWeakness · CWE-266

CVE-2026-12782

HIGH · 7.8 CVSS v3.1 Published 2026-06-21
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
80/100
Remediation priority · High
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A security flaw has been discovered in EaseUS Partition Master up to 14.5. The impacted element is an unknown function in the library EUEDKEPM.sys of the component Kernel Driver. The manipulation results in improper access controls. The attack requires a local approach. The exploit has been released to the public and may be used for attacks. The affected component should be upgraded. The vendor explains: "We have confirmed that this issue was present only in older versions of the product. Our product has since been updated, and the issue has been resolved in the latest version, so it no longer exists."

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A local privilege escalation vulnerability exists in EaseUS Partition Master's kernel driver (EUEDKEPM.sys) due to improper access controls. The vulnerability allows a local attacker with low-privilege access to potentially elevate privileges or bypass security controls. A public exploit is available, increasing exploitation risk.

MitigationUpgrade EaseUS Partition Master to the latest version, as the vendor has confirmed the issue is resolved in current releases. Identify all systems running older versions (14.5 and below) and prioritize remediation given the public exploit and high CVSS score.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check if EaseUS Partition Master is installed
    Open Programs and Features (appwiz.cpl) or check for the installation directory typically at C:\Program Files\EaseUS\Partition Master or C:\Program Files (x86)\EaseUS\Partition Master
    Affected if EaseUS Partition Master is found installed on the system
  2. Identify the installed version
    Right-click on EaseUS Partition Master in Programs and Features and select Properties, or check the version in the application's About/Help section, or examine the version info of the main executable (PartitionMaster.exe)
    Affected if The installed version is 14.5 or lower, or the version cannot be determined but the software is present
  3. Verify presence of the kernel driver
    Check for the file EUEDKEPM.sys in the installation directory (typically in a Driver or Bin subfolder) or search the system using: dir /s C:\EUEDKEPM.sys
    Affected if The file EUEDKEPM.sys exists on the system
  4. Check if the driver is loaded
    Open an elevated command prompt and run: sc query EUEDKEPM or check Device Manager for hidden/system devices, or use PowerShell: Get-WmiObject Win32_SystemDriver | Where-Object {$_.Name -like '*EUEDK*' }
    Affected if The EUEDKEPM driver service exists and is in a running or stopped state (the driver presence itself indicates exposure)

The system is affected if EaseUS Partition Master version 14.5 or below is installed and the EUEDKEPM.sys driver is present on the system, regardless of whether the driver is currently running.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade EaseUS Partition Master to the latest version, as the vendor has confirmed the issue is resolved in current releases. Identify all systems running older versions (14.5 and below) and prioritize remediation given the public exploit and high CVSS score.

Recommended fix Moderate confidence

Latest version of EaseUS Partition Master (vendor states issue resolved in latest version, specific version number not disclosed)

  1. Navigate to the official EaseUS website (www.easeus.com) and download the latest version of EaseUS Partition Master
  2. Ensure you download from the official source only to avoid compromised installers
  3. Uninstall any older versions of EaseUS Partition Master currently installed on the system
  4. Install the latest version of EaseUS Partition Master
  5. Restart the system if prompted by the installer
Caveat Review release notes for any configuration or feature changes between your current version and the latest version

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA1.0 h
10.0 hours of engineering $1,750
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-12782 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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