Detections
Analytics
Security Update for Microsoft .NET Core (November 2026)
high Nessus Plugin ID 380356
Synopsis
The Microsoft .NET Core installations on the remote host are affected by multiple vulnerabilities.Description
The Microsoft .NET Core installations on the remote host are missing security updates. It is, therefore, affected by multiple vulnerabilities:- Stack-based buffer overflow in .NET allows an unauthorized attacker to deny service over a network.
(CVE-2026-109475)
- Deserialization of untrusted data in Visual Studio allows an unauthorized attacker to execute code over a network. (CVE-2026-114151)
- Stack-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network. (CVE-2026-114152)
- Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
(CVE-2026-114158, CVE-2026-114159, CVE-2026-118745)
- Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
(CVE-2026-118747)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update .NET Core, remove vulnerable packages and refer to vendor advisory.See Also
https://dotnet.microsoft.com/en-us/download/dotnet/10.0
https://dotnet.microsoft.com/en-us/download/dotnet/8.0
https://dotnet.microsoft.com/en-us/download/dotnet/9.0
https://support.microsoft.com/kb/5135241
https://support.microsoft.com/kb/5135242
https://support.microsoft.com/kb/5135243
http://www.nessus.org/u?0cfa7879
http://www.nessus.org/u?19a2a623
http://www.nessus.org/u?1b6bea73
http://www.nessus.org/u?1dadfc3d
http://www.nessus.org/u?2035a894
http://www.nessus.org/u?3453fd1a
http://www.nessus.org/u?71202a91
http://www.nessus.org/u?d5eb8131
Plugin Details
Severity: High
ID: 380356
File Name: smb_nt_ms26_nov_dotnet_core.nasl
Version: 1.1
Type: Local
Agent: windows
Family: Windows
Published: 11/13/2026
Updated: 11/13/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.51
CVSS v2
Risk Factor: High
Base Score: 9.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-114158
CVSS v3
Risk Factor: High
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability Information
CPE: cpe:/a:microsoft:.net_core
Required KB Items: installed_sw/.NET Core Windows
Patch Publication Date: 11/10/2026
Vulnerability Publication Date: 11/10/2026
Reference Information
CVE: CVE-2026-109475, CVE-2026-114151, CVE-2026-114152, CVE-2026-114158, CVE-2026-114159, CVE-2026-118745, CVE-2026-118747