Windows Active Directory Remote Code Execution Vulnerability
CVE-2026-33826 is fixed in 11 products on 1 platform, first by KB5082198, released April 14, 2026. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.
<p>Improper input validation in Windows Active Directory allows an authorized attacker to execute code over an adjacent network.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows Server 2012 R2 | KB5082126 | Apr 14, 2026 | |
| Windows Server 2012 R2 (Server Core installation) | KB5082126 | Apr 14, 2026 | |
| Windows Server 2016 | 14393.9060 | KB5082198 | Apr 14, 2026 |
| Windows Server 2016 (Server Core installation) | 14393.9060 | KB5082198 | Apr 14, 2026 |
| Windows Server 2019 | 17763.8644 | KB5082123 | Apr 14, 2026 |
| Windows Server 2019 (Server Core installation) | 17763.8644 | KB5082123 | Apr 14, 2026 |
| Windows Server 2022 | 20348.5020 | KB5082142 | Apr 14, 2026 |
| Windows Server 2022 (Server Core installation) | 20348.5020 | KB5082142 | Apr 14, 2026 |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 25398.2274 | KB5082060 | Apr 14, 2026 |
| Windows Server 2025 | 26100.32690 | KB5082063 | Apr 14, 2026 |
| Windows Server 2025 (Server Core installation) | 26100.32690 | KB5082063 | Apr 14, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.