Double Free in Microsoft Windows 10 Version 1607

CVE-2026-33824

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

Vulnerability class: Double Free

EPSS: 0.001 (18.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: 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.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-33824?
CVE-2026-33824 is a critical-severity vulnerability in Microsoft Windows 10 Version 1607, classified under Double Free. CVSS score: 9.8/10. Published 2026-04-14.
How severe is CVE-2026-33824?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-33824 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.