Heap-based buffer overflow in Microsoft QUIC allows an unauthorized attacker to execute code over a network.

PT OCT 2026 - .NET Core, SDK, and ASP.NET Core

The Microsoft Visual Studio Products are missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - Heap-based buffer overflow in Microsoft QUIC allows an unauthorized attacker to execute code over     a network. (CVE-2026-105016)

  - Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core     allows an unauthorized attacker to perform tampering over a network. (CVE-2026-88092)

  - Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core     allows an unauthorized attacker to bypass a security feature over a network. (CVE-2026-70188)

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 5126646. It is, therefore, affected by multiple vulnerabilities

  - Use after free in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code     over a network. (CVE-2026-100202)

  - Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
    (CVE-2026-100219)

  - Heap-based buffer overflow in Network Policy Server (NPS) allows an unauthorized attacker to execute code     over a network. (CVE-2026-100222)

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 5127648. It is, therefore, affected by multiple vulnerabilities

  - Use after free in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code     over a network. (CVE-2026-100202)

  - Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
    (CVE-2026-100219)

  - Heap-based buffer overflow in Network Policy Server (NPS) allows an unauthorized attacker to execute code     over a network. (CVE-2026-100222)

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 5126655. It is, therefore, affected by multiple vulnerabilities

  - Use after free in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code     over a network. (CVE-2026-100202)

  - Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
    (CVE-2026-100219)

  - Heap-based buffer overflow in Network Policy Server (NPS) allows an unauthorized attacker to execute code     over a network. (CVE-2026-100222)

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 5127646. It is, therefore, affected by multiple vulnerabilities

  - Use after free in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code     over a network. (CVE-2026-100202)

  - Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
    (CVE-2026-100219)

  - Heap-based buffer overflow in Network Policy Server (NPS) allows an unauthorized attacker to execute code     over a network. (CVE-2026-100222)

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 5126653. It is, therefore, affected by multiple vulnerabilities

  - Use after free in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code     over a network. (CVE-2026-100202)

  - Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
    (CVE-2026-100219)

  - Heap-based buffer overflow in Network Policy Server (NPS) allows an unauthorized attacker to execute code     over a network. (CVE-2026-100222)

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	Type	Severity
366085	Security Updates for Microsoft Visual Studio Products 17.14.42 and 18.10.4 (October 2026)	Nessus	Windows : Microsoft Bulletins	Local	critical
365473	KB5126646: Windows Server 2025 Security Update (October 2026)	Nessus	Windows : Microsoft Bulletins	Local	critical
365472	KB5127648: Windows 11 Version 24H2 / Windows 11 Version 25H2 / Windows 11 Version 26H2 Security Update (October 2026)	Nessus	Windows : Microsoft Bulletins	Local	critical
365470	KB5126655: Windows Server 2022 / Azure Stack HCI 22H2 Security Update (October 2026)	Nessus	Windows : Microsoft Bulletins	Local	critical
365469	KB5127646: Windows 11 Version 26H1 Security Update (October 2026)	Nessus	Windows : Microsoft Bulletins	Local	critical
365465	KB5126653: Windows 11 version 23H2 Security Update (October 2026)	Nessus	Windows : Microsoft Bulletins	Local	critical

Detections

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CVE-2026-105016

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