Security Update for Microsoft ASP.NET Core (CVE-2026-56170)

high Nessus Plugin ID 326850

Synopsis

The Microsoft ASP.NET installations on the remote host are affected by a denial of service vulnerability.

Description

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

- Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network. (CVE-2026-56170)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update ASP.NET Core, remove vulnerable packages and refer to vendor advisory.

Plugin Details

Severity: High

ID: 326850

File Name: smb_nt_ms26_jul_aspdotnet_core_CVE-2026-56170.nasl

Version: 1.2

Type: Local

Agent: windows

Family: Windows

Published: 7/14/2026

Updated: 7/15/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.76

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/a:microsoft:.net_core

Required KB Items: SMB/Registry/Enumerated, installed_sw/ASP .NET Core Windows

Exploit Ease: No known exploits are available

Patch Publication Date: 7/14/2026

Vulnerability Publication Date: 7/14/2026

Reference Information

CVE: CVE-2026-56170

Detections

Analytics