CVE-2026-33824

Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability

State: Published
Severity: 9.8 Critical
Published: Apr 14, 2026
Updated: Oct 15, 2026
Reserved: Mar 24, 2026

Description

Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-415 Double Free

Affected Products

Product	Versions
Windows 10 Version 1607Microsoft	10.0.14393.0 to before 10.0.14393.9060Affected
Windows 10 Version 1809Microsoft	10.0.17763.0 to before 10.0.17763.8644Affected
Windows 10 Version 21H2Microsoft	10.0.19044.0 to before 10.0.19044.7184Affected
Windows 10 Version 22H2Microsoft	10.0.19045.0 to before 10.0.19045.7184Affected
Windows 11 version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.6936Affected
Windows 11 Version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.6936Affected
Windows 11 Version 24H2Microsoft	10.0.26100.0 to before 10.0.26100.8246Affected
Windows 11 Version 25H2Microsoft	10.0.26200.0 to before 10.0.26200.8246Affected
Windows 11 version 26H1Microsoft	10.0.28000.0 to before 10.0.28000.1836Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.9060Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.9060Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.8644Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.8644Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.5020Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.2274Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.32690Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.32690Affected

References

Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerabilityvendor-advisorypatch
https://unit42.paloaltonetworks.com/autonomous-ai-cyber-attack-campaign/third-party-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-33824government-resource

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