Heap-based buffer overflow in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.

The remote Windows host is missing security update 5099535. It is, therefore, affected by multiple vulnerabilities

  - Integer overflow or wraparound in Windows RDP allows an unauthorized attacker to execute code over a     network. (CVE-2026-58594)

  - Heap-based buffer overflow in Windows FTP Service allows an unauthorized attacker to execute code over a     network. (CVE-2026-49172)

  - Improper validation of consistency within input in Windows Secure Kernel Mode allows an authorized     attacker to elevate privileges locally. (CVE-2026-42982)

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 5099444. It is, therefore, affected by multiple vulnerabilities

  - Integer overflow or wraparound in Windows RDP allows an unauthorized attacker to execute code over a     network. (CVE-2026-58594)

  - Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized attacker to     execute code locally. (CVE-2026-54992)

  - Cleartext transmission of sensitive information in Windows Ancillary Function Driver for WinSock allows an     authorized attacker to disclose information locally. (CVE-2026-34346)

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 5099445. It is, therefore, affected by multiple vulnerabilities

  - Integer overflow or wraparound in Windows RDP allows an unauthorized attacker to execute code over a     network. (CVE-2026-58594)

  - Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized attacker to     execute code locally. (CVE-2026-54992)

  - Cleartext transmission of sensitive information in Windows Ancillary Function Driver for WinSock allows an     authorized attacker to disclose information locally. (CVE-2026-34346)

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
326857	KB5099535: Windows 10 Version 1607 / Windows Server 2016 Security Update (July 2026)	Nessus	Windows : Microsoft Bulletins	critical
326856	KB5099444: Windows Server 2012 R2 Security Update (July 2026)	Nessus	Windows : Microsoft Bulletins	critical
326854	KB5099445: Windows Server 2012 Security Update (July 2026)	Nessus	Windows : Microsoft Bulletins	critical

Detections

Analytics

CVE-2026-50480

high

Tenable Plugins

critical

critical

critical