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CVE-2026-33824

Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability

Microsoft Internet Key Exchange (IKE) Service Extensions CWE-415

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

CVSS Score
9.8
Critical
EPSS — Exploit Probability
73%
Riskier than 99% of all CVEs · checked 2026-09-09
Exploitation
Confirmed in the wild
KEV since 2026-08-18
Remediation
Patch available
Federal deadline 2026-08-21
CISA 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. Deadline for federal agencies: 2026-08-21.

NVD entry Vendor patch PoC / advisory CISA KEV

14 articles across 9 outlets · first covered Apr 14, 2026 · latest Aug 19, 2026

Coverage timeline

Related CVEs — Microsoft

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