Security Update for Microsoft .NET 8 Core (January 2025)

high Nessus Plugin ID 232847

Synopsis

The remote Windows host is affected by a .NET Core vulnerability

Description

The version of Microsoft .NET 8 Core installed on the remote host is prior to 8.0.12. It is, therefore, affected by multiple vulnerabilities as referenced in the vendor advisory.

- .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21172)

- .NET Elevation of Privilege Vulnerability (CVE-2025-21173)

- .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21176)

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/8.0

http://www.nessus.org/u?3f1a3f29

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21172

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21173

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176

https://support.microsoft.com/help/5050525

Plugin Details

Severity: High

ID: 232847

File Name: smb_nt_ms25_jan_dotnet_core_8.nasl

Version: 1.1

Type: local

Agent: windows

Family: Windows

Published: 3/19/2025

Updated: 3/19/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2025-21176

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: 1/14/2025

Vulnerability Publication Date: 1/14/2025

Reference Information

CVE: CVE-2025-21172, CVE-2025-21173, CVE-2025-21176