Security Update for Microsoft .NET Core SDK (July 2026)

high Nessus Plugin ID 326853

Synopsis

The Microsoft .NET Core SDK installations on the remote host are affected by an elevation of privileges vulnerability.

Description

The Microsoft .NET Core SDK installations on the remote host are missing a security update. It is, therefore, affected by a vulnerability as referenced in the vendor advisory.

- Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally. (CVE-2026-50526)

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.

Plugin Details

Severity: High

ID: 326853

File Name: smb_nt_ms26_jul_dotnet_core_sdk.nasl

Version: 1.2

Type: Local

Agent: windows

Family: Windows

Published: 7/14/2026

Updated: 7/15/2026

Configuration: Enable paranoid mode

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.11

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

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

CVSS Score Source: CVE-2026-50526

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/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 SDK Windows, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 7/14/2026

Vulnerability Publication Date: 7/14/2026

Reference Information

CVE: CVE-2026-50526

Detections

Analytics