Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges
    over a network. (CVE-2026-69439)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges     over a network. (CVE-2026-69439)

Note that Nessus relies on the presence of the package as reported by the vendor.

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

  - Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges     over a network. (CVE-2026-69439)

  - Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a     network. (CVE-2026-69522, CVE-2026-71328)

  - External control of file name or path in .NET allows an unauthorized attacker to elevate privileges over a     network. (CVE-2026-69805)

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
447857	SCA: security update for Microsoft.DiaSymReader.Native (GHSA-527h-q9f6-p7qx)	Tenable Cloud Security	SCA Checks	Local	high
447857	SCA: security update for Microsoft.DiaSymReader.Native (GHSA-527h-q9f6-p7qx)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
344381	Linux Distros Unpatched Vulnerability : CVE-2026-69439	Nessus	Misc.	Local	high
344292	Microsoft Visual Studio Products (September 2026)	Nessus	Windows : Microsoft Bulletins	Local	high

Detections

Analytics

CVE-2026-69439

high

Tenable Plugins

high

high

high

high