CVE-2026-70184
High
Description
Improper resolution of path equivalence in Windows Backup Engine allows an authorized attacker to elevate privileges locally.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Windows 10 Version 21H2
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-41CWE-41
How to fix
Update
- Microsoft Windows 10 Version 21H210.0.19044.7807 or later
- Microsoft Windows 10 Version 22H210.0.19045.7807 or later
- Microsoft Windows 11 version 23H210.0.22631.7652 or later
- Microsoft Windows 11 Version 23H210.0.22631.7652 or later
- Microsoft Windows 11 Version 24H210.0.26100.9711 or later
- Microsoft Windows 11 Version 25H210.0.26200.9711 or later
- Microsoft Windows 11 version 26H110.0.28000.3231 or later
- Microsoft Windows 11 Version 26H210.0.26300.9711 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 21H2 | 10.0.19044.0 ≤ v < 10.0.19044.7807 | 10.0.19044.7807 |
| Microsoft Windows 10 Version 22H2 | 10.0.19045.0 ≤ v < 10.0.19045.7807 | 10.0.19045.7807 |
| Microsoft Windows 11 version 23H2 | 10.0.22631.0 ≤ v < 10.0.22631.7652 | 10.0.22631.7652 |
| Microsoft Windows 11 Version 23H2 | 10.0.22631.0 ≤ v < 10.0.22631.7652 | 10.0.22631.7652 |
| Microsoft Windows 11 Version 24H2 | 10.0.26100.0 ≤ v < 10.0.26100.9711 | 10.0.26100.9711 |
| Microsoft Windows 11 Version 25H2 | 10.0.26200.0 ≤ v < 10.0.26200.9711 | 10.0.26200.9711 |
| Microsoft Windows 11 version 26H1 | 10.0.28000.0 ≤ v < 10.0.28000.3231 | 10.0.28000.3231 |
| Microsoft Windows 11 Version 26H2 | 10.0.26300.0 ≤ v < 10.0.26300.9711 | 10.0.26300.9711 |
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.