---
id: CVE-2026-33825
title: Microsoft Defender Elevation of Privilege Vulnerability
summary: >-
  Insufficient granularity of access control in Microsoft Defender allows an
  authorized attacker to elevate privileges locally.
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-1220
vendor: Microsoft
product: Microsoft Defender Antimalware Platform
affected:
  - defender_antimalware_platform >= 4.0.0.0 < 4.18.26030.3011
ssvc:
  exploitation: active
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-04-23T03:55:45.505705Z'
exploited: true
exploitAvailable: true
published: '2026-04-14'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T17:25:33.402Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-33825'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825'
    label: Microsoft Defender Elevation of Privilege Vulnerability
tags:
  - cve.org
  - in-the-wild
  - exploit-available
  - kev
epss: 0.00399
epssPercentile: 0.31312
kev: true
kevDateAdded: '2026-04-22'
kevDueDate: '2026-05-06'
kevRansomware: true
exploits:
  github: 5
  githubRepos:
    - 'https://github.com/Letlaka/redsun-bluehammer-undefend-detection-pack'
    - 'https://github.com/0xBlackash/CVE-2026-33825'
    - 'https://github.com/Joe1sn/CVE-2026-33825'
  checkedAt: '2026-09-25T18:14:55.046Z'
ingestedAt: '2026-09-25T18:14:20.439Z'
---

## Overview

Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.

## Affected

- `defender_antimalware_platform >= 4.0.0.0 < 4.18.26030.3011`

## Remediation

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