MSRXCVE-2026-33824
CVE-2026-33824
Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability
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.
CVSS 3.1 · CNA · microsoft.com
chance of exploitation in the next 30 days (EPSS; in the top 1% of all CVEs)
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
Scores
Affected products
- microsoft windows 10 1607: < 10.0.14393.9060
- microsoft windows 10 1809: < 10.0.17763.8644
- microsoft windows 10 21h2: < 10.0.19044.7184
- microsoft windows 10 22h2: < 10.0.19045.7184
- microsoft windows 11 23h2: < 10.0.22631.6936
- microsoft windows 11 24h2: < 10.0.26100.8246
- microsoft windows 11 25h2: < 10.0.26200.8246
- microsoft windows 11 26h1: < 10.0.28000.1836
- microsoft windows server 2016: < 10.0.14393.9060
- microsoft windows server 2019: < 10.0.17763.8644
- microsoft windows server 2022: < 10.0.20348.5020
- microsoft windows server 2022 23h2: < 10.0.25398.2274
- microsoft windows server 2025: < 10.0.26100.32690
Weakness: CWE-415
3 references (advisories, patches, write-ups)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33824 · Vendor Advisory
- https://unit42.paloaltonetworks.com/autonomous-ai-cyber-attack-campaign/ · Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-33824 · US Government Resource
Sources: NVD, CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.