9.8
Critical
Exploited
CVE-2026-33824 Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
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.
Ransomware campaigns
Not observed so far
Weakness
CWE-415
Description
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 Version 1607 10.0 | 10.0.14393.0 → < 10.0.14393.9060 | 10.0.14393.9060 |
| Windows 10 Version 1809 10.0 | 10.0.17763.0 → < 10.0.17763.8644 | 10.0.17763.8644 |
| Windows 10 Version 21H2 10.0 | 10.0.19044.0 → < 10.0.19044.7184 | 10.0.19044.7184 |
| Windows 10 Version 22H2 10.0 | 10.0.19045.0 → < 10.0.19045.7184 | 10.0.19045.7184 |
| Windows 11 version 22H3 10.0 | 10.0.22631.0 → < 10.0.22631.6936 | 10.0.22631.6936 |
| Windows 11 Version 23H2 10.0 | 10.0.22631.0 → < 10.0.22631.6936 | 10.0.22631.6936 |
| Windows 11 Version 24H2 10.0 | 10.0.26100.0 → < 10.0.26100.8246 | 10.0.26100.8246 |
| Windows 11 Version 25H2 10.0 | 10.0.26200.0 → < 10.0.26200.8246 | 10.0.26200.8246 |
| Windows 11 version 26H1 10.0 | 10.0.28000.0 → < 10.0.28000.1836 | 10.0.28000.1836 |
Show the 8 other branches Hide the 8 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server 2016 10.0 | 10.0.14393.0 → < 10.0.14393.9060 | 10.0.14393.9060 |
| Windows Server 2016 (Server Core installation) 10.0 | 10.0.14393.0 → < 10.0.14393.9060 | 10.0.14393.9060 |
| Windows Server 2019 10.0 | 10.0.17763.0 → < 10.0.17763.8644 | 10.0.17763.8644 |
| Windows Server 2019 (Server Core installation) 10.0 | 10.0.17763.0 → < 10.0.17763.8644 | 10.0.17763.8644 |
| Windows Server 2022 10.0 | 10.0.20348.0 → < 10.0.20348.5020 | 10.0.20348.5020 |
| Windows Server 2022, 23H2 Edition (Server Core installation) 10.0 | 10.0.25398.0 → < 10.0.25398.2274 | 10.0.25398.2274 |
| Windows Server 2025 10.0 | 10.0.26100.0 → < 10.0.26100.32690 | 10.0.26100.32690 |
| Windows Server 2025 (Server Core installation) 10.0 | 10.0.26100.0 → < 10.0.26100.32690 | 10.0.26100.32690 |
References
Timeline
- Published
- Added to the KEV catalogue
- Last modified
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