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VID 26905
Severity 40
Port 139.445
Protocol TCP
Class SMB
Detailed Description Microsoft Security Update for May 2026 is not installed. The remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities

- Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over an adjacent network. (CVE-2026-34329)
- Heap-based buffer overflow in Windows Win32K
- GRFX allows an authorized attacker to execute code locally.(CVE-2026-40403)
- Use after free in Windows TCP/IP allows an unauthorized attacker to execute code over a network.(CVE-2026-40415)

* References:
https://support.microsoft.com/en-us/help/4009469
https://support.microsoft.com/en-us/help/4009470
https://support.microsoft.com/en-us/help/4009471
https://support.microsoft.com/en-us/help/4000825

* Platforms Affected:
Windows Server 2008 R2 SP1
Windows Server 2008 R2 x64 SP1
Windows 8.1
Windows Server 2012
Windows Server 2012 R2
Windows 10
Windows 11
Windows Server 2016
Windows Server 2019
Recommendation Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin May 2026 Microsoft security update at

https://support.microsoft.com/en-us/help/4009469
https://support.microsoft.com/en-us/help/4009470
https://support.microsoft.com/en-us/help/4009471
https://support.microsoft.com/en-us/help/4000825
-- OR --
Patches for Windows platforms are also available from the Microsoft Windows Update Web site, http://windowsupdate.microsoft.com. Windows Update detects what version of Windows you are running and offers the appropriate patch.
Related URL CVE-2026-34329,CVE-2026-40403,CVE-2026-40406,CVE-2026-40407,CVE-2026-40408,CVE-2026-40410,CVE-2026-40413,CVE-2026-40414,CVE-2026-40415 (CVE)
Related URL (SecurityFocus)
Related URL (ISS)