CRITICAL CISA KEV

CVE-2026-33824

CVSS v3

9.8

CRITICAL

EPSS Score

0.1 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

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

CISA Known Exploited Vulnerability

Date Added: 2026-08-18
Patch Due Date: 2026-08-21
Ransomware Use: Unknown

Technical details

CVSS v3 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
Published: 2026-05-07
Last Modified: 2026-08-18
MSRC Title: Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability

Frequently asked questions

What is CVE-2026-33824?

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

Is CVE-2026-33824 actively exploited?

Yes. CVE-2026-33824 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-08-21.

What is the CVSS score for CVE-2026-33824?

CVE-2026-33824 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 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.

Is CVE-2026-33824 affecting your environment?

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