The remote Windows host is missing security update 5121000. It is, therefore, affected by multiple vulnerabilities

  - Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
    (CVE-2026-62815)

  - Improper neutralization of special elements used in a command ('command injection') in Windows Active     Directory allows an unauthorized attacker to execute code over a network. (CVE-2026-49179)

  - Heap-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an authorized     attacker to execute code over a network. (CVE-2026-62784)

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 5120233 or hotpatch 5120228. It is, therefore, affected by multiple vulnerabilities

  - Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
    (CVE-2026-62815)

  - Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.
    (CVE-2026-62878)

  - Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a     network. (CVE-2026-62893)

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 5120242 or hotpatch 5120229. It is, therefore, affected by multiple vulnerabilities

  - Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
    (CVE-2026-62815)

  - Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.
    (CVE-2026-62878)

  - Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a     network. (CVE-2026-62893)

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 5120238. It is, therefore, affected by multiple vulnerabilities

  - Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.
    (CVE-2026-62878)

  - Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a     network. (CVE-2026-62893)

  - Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code     over a network. (CVE-2026-65791)

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	Published	Updated	Severity
334603	KB5121000: Windows 11 Version 26H1 Security Update (August 2026)	Nessus	Windows : Microsoft Bulletins	8/11/2026	8/31/2026	high
334611	KB5120233: Windows Server 2025 Security Update (August 2026)	Nessus	Windows : Microsoft Bulletins	8/11/2026	8/31/2026	high
334604	KB5120242: Windows Server 2022 / Azure Stack HCI 22H2 Security Update (August 2026)	Nessus	Windows : Microsoft Bulletins	8/11/2026	8/31/2026	high
334607	KB5120238: Windows 10 version 1809 / Windows Server 2019 Security Update (August 2026)	Nessus	Windows : Microsoft Bulletins	8/11/2026	8/14/2026	high

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