Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
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Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-14. NVD baseline CVSS 9.8; sources differ by 0.0.
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
April 14, 2026
June 1, 2026
Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33824These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
IKEv2, ikeext.dll, CVE-2026-33824, double free, heap grooming, ROP, SKF fragmentation, Windows exploit, anti-debug, obfuscation, API hooking, shellcode, reverse shell
Open source ↗See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-33824
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.
msrc
CWE-415