---
id: CVE-2026-45647
title: Microsoft Defender for Endpoint for Mac Elevation of Privilege Vulnerability
summary: >-
  Time-of-check time-of-use (toctou) race condition in Microsoft Defender for
  Endpoint allows an authorized attacker to elevate privileges locally.
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-367
vendor: Microsoft
product: Microsoft Defender for Endpoint for Mac
affected:
  - defender_for_endpoint_for_mac >= 101.0.0 < 101.26042.0011
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-06-10T03:55:59.706422Z'
published: '2026-06-09'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T13:44:36.367Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-45647'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45647'
    label: >-
      Microsoft Defender for Endpoint for Mac Elevation of Privilege
      Vulnerability
tags:
  - cve.org
epss: 0.00215
epssPercentile: 0.12192
ingestedAt: '2026-09-24T14:44:21.390Z'
---

## Overview

Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.

## Affected

- `defender_for_endpoint_for_mac >= 101.0.0 < 101.26042.0011`

## Remediation

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