CVE-2026-26183
High
Description
Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Microsoft Windows Server
PublishedApr 14, 2026
First seenApr 14, 2026
Weakness typeCWE-284Improper access control
How to fix
Update
- microsoft windows_server_201610.0.14393.9060 or later
- microsoft windows_server_201910.0.17763.8644 or later
- microsoft windows_server_202210.0.20348.5020 or later
- microsoft windows_server_2022_23h210.0.25398.2274 or later
- microsoft windows_server_202510.0.26100.32690 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_server_2012 | No range specified, r2 | — |
| microsoft windows_server_2016 | v < 10.0.14393.9060 | 10.0.14393.9060 |
| microsoft windows_server_2019 | v < 10.0.17763.8644 | 10.0.17763.8644 |
| microsoft windows_server_2022 | v < 10.0.20348.5020 | 10.0.20348.5020 |
| microsoft windows_server_2022_23h2 | v < 10.0.25398.2274 | 10.0.25398.2274 |
| microsoft windows_server_2025 | v < 10.0.26100.32690 | 10.0.26100.32690 |
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