---
id: CVE-2026-33824
title: >-
  Double free in Windows IKE Extension allows an unauthorized attacker to
  execute code over a network.
summary: >-
  Double free in Windows IKE Extension allows an unauthorized attacker to
  execute code over a network.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-415
vendor: microsoft
product: windows_10_1607
affected:
  - windows_10_1607 < 10.0.14393.9060
  - windows_10_1809 < 10.0.17763.8644
  - windows_10_21h2 < 10.0.19044.7184
  - windows_10_22h2 < 10.0.19045.7184
  - windows_11_23h2 < 10.0.22631.6936
  - windows_11_24h2 < 10.0.26100.8246
  - windows_11_25h2 < 10.0.26200.8246
  - windows_11_26h1 < 10.0.28000.1836
  - windows_server_2016 < 10.0.14393.9060
  - windows_server_2019 < 10.0.17763.8644
  - windows_server_2022 < 10.0.20348.5020
  - windows_server_2022_23h2 < 10.0.25398.2274
  - windows_server_2025 < 10.0.26100.32690
patched:
  - windows_10_1607 10.0.14393.9060
  - windows_10_1809 10.0.17763.8644
  - windows_10_21h2 10.0.19044.7184
  - windows_10_22h2 10.0.19045.7184
  - windows_11_23h2 10.0.22631.6936
  - windows_11_24h2 10.0.26100.8246
  - windows_11_25h2 10.0.26200.8246
  - windows_11_26h1 10.0.28000.1836
  - windows_server_2016 10.0.14393.9060
  - windows_server_2019 10.0.17763.8644
  - windows_server_2022 10.0.20348.5020
  - windows_server_2022_23h2 10.0.25398.2274
  - windows_server_2025 10.0.26100.32690
published: '2026-04-14'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T18:17:25.133'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-33824'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33824'
    label: secure@microsoft.com
  - url: 'https://unit42.paloaltonetworks.com/autonomous-ai-cyber-attack-campaign/'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-33824
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
  - cve.org
epss: 0.01619
epssPercentile: 0.75011
kev: true
kevDateAdded: '2026-08-18'
kevDueDate: '2026-08-21'
kevRansomware: false
exploited: true
exploits:
  github: 2
  githubRepos:
    - 'https://github.com/EpSiLoNPoInTOrI/IKEV2-POC'
    - 'https://github.com/kaleth4/CVE-2026-33824'
  checkedAt: '2026-09-25T19:16:13.547Z'
exploitAvailable: true
ssvc:
  exploitation: active
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-04-13T00:00:00+00:00'
ingestedAt: '2026-08-18T18:21:28.685Z'
---

## Overview

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

## Affected

- `windows_10_1607 < 10.0.14393.9060`
- `windows_10_1809 < 10.0.17763.8644`
- `windows_10_21h2 < 10.0.19044.7184`
- `windows_10_22h2 < 10.0.19045.7184`
- `windows_11_23h2 < 10.0.22631.6936`
- `windows_11_24h2 < 10.0.26100.8246`
- `windows_11_25h2 < 10.0.26200.8246`
- `windows_11_26h1 < 10.0.28000.1836`
- `windows_server_2016 < 10.0.14393.9060`
- `windows_server_2019 < 10.0.17763.8644`
- `windows_server_2022 < 10.0.20348.5020`
- `windows_server_2022_23h2 < 10.0.25398.2274`
- `windows_server_2025 < 10.0.26100.32690`

## Remediation

Upgrade past the affected range:

- `windows_10_1607 10.0.14393.9060`
- `windows_10_1809 10.0.17763.8644`
- `windows_10_21h2 10.0.19044.7184`
- `windows_10_22h2 10.0.19045.7184`
- `windows_11_23h2 10.0.22631.6936`
- `windows_11_24h2 10.0.26100.8246`
- `windows_11_25h2 10.0.26200.8246`
- `windows_11_26h1 10.0.28000.1836`
- `windows_server_2016 10.0.14393.9060`
- `windows_server_2019 10.0.17763.8644`
- `windows_server_2022 10.0.20348.5020`
- `windows_server_2022_23h2 10.0.25398.2274`
- `windows_server_2025 10.0.26100.32690`