Untrusted pointer dereference in Windows Kernel allows an authorized attacker to elevate privileges locally.

The remote Windows host is missing security update 5087539 or hotpatch 5087423. It is, therefore, affected by multiple vulnerabilities

  - Heap-based buffer overflow in Microsoft Windows DNS allows an unauthorized attacker to execute code over a     network. (CVE-2026-41096)

  - Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a     network. (CVE-2026-41089)

  - Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code locally.
    (CVE-2026-40403)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Windows host is missing security update 5089548. It is, therefore, affected by multiple vulnerabilities

  - Heap-based buffer overflow in Microsoft Windows DNS allows an unauthorized attacker to execute code over a     network. (CVE-2026-41096)

  - Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code locally.
    (CVE-2026-40403)

  - Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over     an adjacent network. (CVE-2026-34329)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Windows host is missing security update 5089549 or hotpatch 5089466. It is, therefore, affected by multiple vulnerabilities

  - Heap-based buffer overflow in Microsoft Windows DNS allows an unauthorized attacker to execute code over a     network. (CVE-2026-41096)

  - Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code locally.
    (CVE-2026-40403)

  - Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over     an adjacent network. (CVE-2026-34329)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
314355	KB5087539: Windows Server 2025 Security Update (May 2026)	Nessus	Windows : Microsoft Bulletins	high
314342	KB5089548: Windows 11 Version 26H1 Security Update (May 2026)	Nessus	Windows : Microsoft Bulletins	high
314341	KB5089549: Windows 11 Version 24H2 / Windows 11 Version 25H2 Security Update (May 2026)	Nessus	Windows : Microsoft Bulletins	high

Detections

Analytics

CVE-2026-40369

high

Tenable Plugins

high

high

high