Security Update for Microsoft .NET Core (June 2025)

high Nessus Plugin ID 238082

Synopsis

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

Description

The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the vendor advisory.

- .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-30399)

Note that Nessus has not tested for this issue 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

https://dotnet.microsoft.com/en-us/download/dotnet/9.0

https://github.com/dotnet/announcements/issues/361

http://www.nessus.org/u?61938577

http://www.nessus.org/u?418a82b2

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30399

https://support.microsoft.com/help/5061935

https://support.microsoft.com/help/5061936

Plugin Details

Severity: High

ID: 238082

File Name: smb_nt_ms25_jun_dotnet_core.nasl

Version: 1.2

Type: local

Agent: windows

Family: Windows

Published: 6/10/2025

Updated: 6/13/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2025-30399

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:.net_core

Required KB Items: installed_sw/.NET Core Windows

Exploit Ease: No known exploits are available

Patch Publication Date: 6/10/2025

Vulnerability Publication Date: 6/10/2025

Reference Information

CVE: CVE-2025-30399

IAVA: 2025-A-0410