CVE-2026-33824
Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
- Record
CVE-2026-33824- CVSS 3.1
- 9.8 Critical
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 - Weakness
- CWE-415
- Updated
- 2026-11-02
EUVDEUVD-2026-22641
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
- Record
EUVD-2026-22641- CVSS 3.1
- 9.8 Critical
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-q6qf-3m2m-xq4f
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
- Record
GHSA-q6qf-3m2m-xq4f- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-415
- Updated
- 2026-11-02
CISA KEV No score
Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability
Microsoft Internet Key Exchange (IKE) Service Extensions contains a double free vulnerability that could enable remote code execution.
- Record
CVE-2026-33824- Weakness
- CWE-415
- Updated
- 2026-11-02
NVD
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
- Record
CVE-2026-33824- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-415
- Updated
- 2026-11-02
Affected products
- microsoft internet key exchange (ike) service extensions
- microsoft windows 10 version 1607
- microsoft windows 10 version 1809
- microsoft windows 10 version 21h2
- microsoft windows 10 version 22h2
- microsoft windows 11 version 23h2
- microsoft windows 11 version 24h2
- microsoft windows 11 version 25h2
- microsoft windows 11 version 26h1
- microsoft windows server 2016
- microsoft windows server 2016 (server core installation)
- microsoft windows server 2019
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- microsoft windows server 2019 (server core installation)
- microsoft windows server 2022
- microsoft windows server 2022, 23h2 edition (server core installation)
- microsoft windows server 2025
- microsoft windows server 2025 (server core installation)
- microsoft windows 10 1607
- microsoft windows 10 1809
- microsoft windows 10 21h2
- microsoft windows 10 22h2
- microsoft windows 11 23h2
- microsoft windows 11 24h2
- microsoft windows 11 25h2
- microsoft windows 11 26h1
- microsoft windows server 2022 23h2
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | kaleth4/CVE-2026-33824 | 2026-04-21 |
| PoC in GitHub | EpSiLoNPoInTOrI/IKEV2-POC | 2026-05-18 |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation, exploits | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-33824 is a critical vulnerability (CVSS 9.8) in Microsoft Internet Key Exchange (ike) Service Extensions, published April 14, 2026. CISA lists it as known to be exploited, since August 18, 2026. EUVD reports exploitation since August 18, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 77.1%, the 99th percentile. No source names a fixed version.