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CVE-2026-33824criticalunder attackCWE-415

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

78Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has a public proof of concept.

ssvc Actcvss 9.8epss 1.6%
from disclosure to weapon34 days
Published on NVDApr 14
1st PoC+34d
CISA KEV+126d
exploitation probability
1.6%top 25% of all CVEs
observed exploitation
yesCISA + VulnCheck
1 public exploit(s)
Action required by CISAfederal deadline: 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.

In short

A flaw in Windows Internet Key Exchange (IKE) Service Extensions allows an attacker to crash the system or run malicious code remotely without needing any credentials. This happens because the same memory location is freed twice, causing instability that can be exploited.

Technical detail

Double free vulnerability (CWE-415) in Windows IKE Extensions permits remote code execution via network-based attack without authentication. The memory corruption arising from duplicate deallocation enables arbitrary code execution with the privileges of the IKE service, affecting confidentiality, integrity, and availability.

Summary generated and translated by AI from the official description.
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
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
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.