Vulnerability in Microsoft Defender For Endpoint
CVE-2026-50658
Time-of-check time-of-use (toctou) race condition in Microsoft Defender allows an authorized attacker to elevate privileges locally.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.002 (10.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Defender_for_endpoint
- Microsoft Defender For Endpoint Mac — versions 101.0.0
Weakness classification (CWE)
References
- Microsoft Defender for Endpoint for Mac Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-50658?
- CVE-2026-50658 is a high-severity vulnerability in Microsoft Defender For Endpoint, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2026-07-14.
- How severe is CVE-2026-50658?
- High severity. CVSS v3 base score is 7.0 out of 10.