CVE-2026-56178
Medium
Description
Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Microsoft Defender For Endpoint
PublishedJul 14, 2026
First seenJul 14, 2026
Weakness typeCWE-367CWE-367
How to fix
Update
- microsoft defender_for_endpoint101.26042.0020 or later
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.