Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock 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 5087544. 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)

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 5087545 or hotpatch 5087424. It is, therefore, affected by multiple vulnerabilities

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

  - Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.
    (CVE-2026-40402)

  - 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 5087420. 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)

  - Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.
    (CVE-2026-40402)

  - 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 5087537. It is, therefore, affected by multiple vulnerabilities

  - 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)

  - 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 5087541. 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 5087538. It is, therefore, affected by multiple vulnerabilities

  - 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)

  - 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 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
314353	KB5087544: Windows 10 version 21H2 / Windows 10 Version 22H2 Security Update (May 2026)	Nessus	Windows : Microsoft Bulletins	high
314352	KB5087545: Windows Server 2022 / Azure Stack HCI 22H2 Security Update (May 2026)	Nessus	Windows : Microsoft Bulletins	high
314349	KB5087420: Windows 11 version 23H2 Security Update (May 2026)	Nessus	Windows : Microsoft Bulletins	high
314348	KB5087537: Windows 10 Version 1607 / Windows Server 2016 Security Update (May 2026)	Nessus	Windows : Microsoft Bulletins	high
314347	KB5087541: Windows Server version 23H2 Security Update (May 2026)	Nessus	Windows : Microsoft Bulletins	high
314346	KB5087538: Windows 10 version 1809 / Windows Server 2019 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-2026-34345

high

Tenable Plugins

high

high

high

high

high

high

high

high

high