CVE-2026-56178

Microsoft Defender for Endpoint for Mac Elevation of Privilege Vulnerability

CVE-2026-56178 is fixed in Microsoft Defender on 1 platform by Microsoft Defender 101.26042.0020 (version 101.26042.0020), released June 12, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.0

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0023

14th percentile

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

Where it's fixed

Product	Fixed in	Fix	Released
macOS
Microsoft Defender	101.26042.0020	Microsoft Defender 101.26042.0020	Jun 12, 2026

Details

Published
July 14, 2026
Weakness
Time-of-check Time-of-use (TOCTOU) Race Condition
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56178

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