CRITICAL✓ PATCH🇵🇱 Wersja polska

CVE-2026-33824

CVSS 9.8v3.1pub. 2026-04-14upd. 2026-04-17

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

🤖 AI Analysis
How it works

The double free vulnerability (CWE-415) consists of freeing the same memory area twice by the vulnerable component. An attacker can send specially crafted network packets to the IKE Extension service, causing heap corruption. This allows the attacker to take control over the process execution flow and execute arbitrary code in the context of the vulnerable service, without the need for any privileges or user interaction.

Impact

An unauthenticated remote attacker can remotely execute arbitrary code on a vulnerable system, which may lead to complete system takeover, disclosure of sensitive data, or disruption of its availability.

Mitigation & patch

Security patches available from the vendor should be applied according to references (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33824). Additionally, it is recommended to restrict network access to IKE services (UDP ports 500 and 4500) only to trusted hosts using firewall rules, as a temporary measure until the patch is deployed.

Who is affected

Microsoft Windows 10 22H2, Microsoft Windows 11 23H2, Microsoft Windows 11 26H1, Microsoft Windows Server 2022, Microsoft Windows Server 2022 23H2

Analysis generated by Claude AI (Anthropic) based on NVD data. Always verify with vendor.
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Microsoft Windows 10 1607

    OS
    Microsoft
    < 10.0.14393.9060

  • Microsoft Windows 10 1809

    OS
    Microsoft
    < 10.0.17763.8644

  • Microsoft Windows 10 21h2

    OS
    Microsoft
    < 10.0.19044.7184

  • Microsoft Windows 10 22h2

    OS
    Microsoft
    < 10.0.19045.7184

  • Microsoft Windows 11 23h2

    OS
    Microsoft
    < 10.0.22631.6936

  • Microsoft Windows 11 24h2

    OS
    Microsoft
    < 10.0.26100.8246

  • Microsoft Windows 11 25h2

    OS
    Microsoft
    < 10.0.26200.8246

  • Microsoft Windows 11 26h1

    OS
    Microsoft
    < 10.0.28000.1836

  • Microsoft Windows Server 2016

    OS
    Microsoft
    < 10.0.14393.9060

  • Microsoft Windows Server 2019

    OS
    Microsoft
    < 10.0.17763.8644

  • Microsoft Windows Server 2022

    OS
    Microsoft
    < 10.0.20348.5020

  • Microsoft Windows Server 2022 23h2

    OS
    Microsoft
    < 10.0.25398.2274

  • Microsoft Windows Server 2025

    OS
    Microsoft
    < 10.0.26100.32690
🟢
PATCH AVAILABLE
Vendor update available. Deploy in standard maintenance cycle.
CWE
References

Related vulnerabilities

CVE-2025-59287CRITICAL9.8⚠ KEVPL ✓ten sam produkt

RCE w Windows Server Update Service (WSUS) — deserializacja danych

CVE-2020-1040CRITICAL9.0⚠ KEVten sam produkt

A remote code execution vulnerability exists when Hyper-V RemoteFX vGPU on a host server fails to properly val...

CVE-2020-1350CRITICAL10.0⚠ KEVten sam produkt

A remote code execution vulnerability exists in Windows Domain Name System servers when they fail to properly ...

CVE-2020-0646CRITICAL9.8⚠ KEVten sam produkt

A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properl...

CVE-2017-8543CRITICAL9.8⚠ KEVten sam produkt

Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista, Windows 7 SP1, Windows S...