CVE-2026-50657

Medium

Description

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

SeverityMedium

CVSS4.7

Exploit probability—

Product

Microsoft Defender For Endpoint

PublishedJul 14, 2026

First seenJul 14, 2026

Weakness typeCWE-359CWE-359

How to fix

Update

microsoft defender_for_endpoint101.26042.0020 or later

Patches

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50657

Affected products

Product	Affected versions	Fixed in
microsoft defender_for_endpoint	101.0.0 ≤ v < 101.26042.0020	101.26042.0020

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.