---
id: CVE-2026-69414
title: Microsoft Defender Elevation of Privilege Vulnerability
summary: >-
  Microsoft is aware of an elevation of privilege in the Microsoft Malware
  Protection Engine in Microsoft Defender publicly referred to as
  "ShieldBreak ".
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-284
vendor: Microsoft
product: Microsoft Malware Protection Engine
affected:
  - malware_protection_engine >= 1.1.0.0 < 1.1.26080.3
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-08-17T00:00:00+00:00'
exploitAvailable: true
published: '2026-08-14'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T13:45:54.017Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-69414'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69414'
    label: Microsoft Defender Elevation of Privilege Vulnerability
tags:
  - cve.org
  - exploit-available
epss: 0.00557
epssPercentile: 0.45302
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/1neptune/ShieldBreak'
  checkedAt: '2026-09-24T14:44:56.010Z'
ingestedAt: '2026-09-08T18:07:34.894Z'
---

## Overview

Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as &quot;ShieldBreak &quot;.

## Affected

- `malware_protection_engine >= 1.1.0.0 < 1.1.26080.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.