---
id: CVE-2026-50657
title: Microsoft Defender for Endpoint for Mac Information Disclosure Vulnerability
summary: >-
  Exposure of private personal information to an unauthorized actor in Microsoft
  Defender allows an authorized attacker to disclose information locally.
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-359
vendor: Microsoft
product: Microsoft Defender for Endpoint for Mac
affected:
  - defender_for_endpoint_for_mac >= 101.0.0 < 101.26042.0020
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-07-15T13:59:35.041024Z'
exploitAvailable: true
published: '2026-07-14'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T22:32:08.785Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-50657'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50657'
    label: >-
      Microsoft Defender for Endpoint for Mac Information Disclosure
      Vulnerability
tags:
  - cve.org
  - exploit-available
epss: 0.004
epssPercentile: 0.31421
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/NeseOS-Corp/CVE-2026-50657'
  checkedAt: '2026-09-25T08:21:01.454Z'
ingestedAt: '2026-09-08T17:06:31.913Z'
---

## Overview

Exposure of private personal information to an unauthorized actor in Microsoft Defender allows an authorized attacker to disclose information locally.

## Affected

- `defender_for_endpoint_for_mac >= 101.0.0 < 101.26042.0020`

## Remediation

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