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CVE-2026-33824: Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability

criticalknown exploitedpublic exploitCVE-2026-33824
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Microsoft Internet Key Exchange (IKE) Service Extensions contains a double free vulnerability that could enable remote code execution.

CSIRTS triage

vendor: Microsoftproduct: Internet Key Exchange (IKE) Service ExtensionsMemory corruptionRemote code execution
What
Microsoft IKE Service Extensions contains a double free vulnerability enabling remote code execution.
Who is affected
Windows systems running Internet Key Exchange (IKE) Service Extensions.
Urgency
Critical; actively exploited memory corruption vulnerability with remote code execution capability.
Action
Apply the latest Microsoft security update for IKE Service Extensions immediately.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2026-08-18
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-33824

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-33824coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

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