CVE-2026-33824
Description
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
How to fix
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA due date: Aug 21, 2026- microsoft windows_10_160710.0.14393.9060 or later
- microsoft windows_10_180910.0.17763.8644 or later
- microsoft windows_10_21h210.0.19044.7184 or later
- microsoft windows_10_22h210.0.19045.7184 or later
- microsoft windows_11_23h210.0.22631.6936 or later
- microsoft windows_11_24h210.0.26100.8246 or later
- microsoft windows_11_25h210.0.26200.8246 or later
- microsoft windows_11_26h110.0.28000.1836 or later
- 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
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_10_1607 | v < 10.0.14393.9060 | 10.0.14393.9060 |
| microsoft windows_10_1809 | v < 10.0.17763.8644 | 10.0.17763.8644 |
| microsoft windows_10_21h2 | v < 10.0.19044.7184 | 10.0.19044.7184 |
| microsoft windows_10_22h2 | v < 10.0.19045.7184 | 10.0.19045.7184 |
| microsoft windows_11_23h2 | v < 10.0.22631.6936 | 10.0.22631.6936 |
| microsoft windows_11_24h2 | v < 10.0.26100.8246 | 10.0.26100.8246 |
| microsoft windows_11_25h2 | v < 10.0.26200.8246 | 10.0.26200.8246 |
| microsoft windows_11_26h1 | v < 10.0.28000.1836 | 10.0.28000.1836 |
| 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 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.