CVE-2026-33824
Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-08-18. Federal due date: 2026-08-21.
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.
Impact
Microsoft Internet Key Exchange (IKE) Service Extensions contains a double free vulnerability that could enable remote code execution.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core Installation) | from 10.0.25398.0 before 10.0.25398.2274 |
| Microsoft | Windows Server 2025 | from 10.0.26100.0 before 10.0.26100.32690 |
| Microsoft | Windows Server 2019 (Server Core Installation) | from 10.0.17763.0 before 10.0.17763.8644 |
| Microsoft | Windows Server 2019 | from 10.0.17763.0 before 10.0.17763.8644 |
| Microsoft | Windows 10 Version 1809 | from 10.0.17763.0 before 10.0.17763.8644 |
| Microsoft | Windows 11 Version 26H1 | from 10.0.28000.0 before 10.0.28000.1836 |
| Microsoft | Windows Server 2016 | from 10.0.14393.0 before 10.0.14393.9060 |
| Microsoft | Windows 10 Version 1607 | from 10.0.14393.0 before 10.0.14393.9060 |
| Microsoft | Windows 11 Version 23H2 | from 10.0.22631.0 before 10.0.22631.6936 |
| Microsoft | Windows 11 Version 25H2 | from 10.0.26200.0 before 10.0.26200.8246 |
| Microsoft | Windows Server 2016 (Server Core Installation) | from 10.0.14393.0 before 10.0.14393.9060 |
| Microsoft | Windows 10 Version 22H2 | from 10.0.19045.0 before 10.0.19045.7184 |
| Microsoft | Windows 10 1607 | before 10.0.14393.9060 |
| Microsoft | Windows 10 1809 | before 10.0.17763.8644 |
| Microsoft | Windows 10 21h2 | before 10.0.19044.7184 |
| Microsoft | Windows 10 22h2 | before 10.0.19045.7184 |
| Microsoft | Windows 11 23h2 | before 10.0.22631.6936 |
| Microsoft | Windows 11 24h2 | before 10.0.26100.8246 |
| Microsoft | Windows 11 25h2 | before 10.0.26200.8246 |
| Microsoft | Windows 11 26h1 | before 10.0.28000.1836 |
| Microsoft | Windows Server 2016 | before 10.0.14393.9060 |
| Microsoft | Windows Server 2019 | before 10.0.17763.8644 |
| Microsoft | Windows Server 2022 | before 10.0.20348.5020 |
| Microsoft | Windows Server 2022 23h2 | before 10.0.25398.2274 |