Detections
Analytics
Microsoft .NET Core (April 2026)
high Nessus Plugin ID 307353
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:- Denial of Service (CVE-2026-26171, CVE-2026-32203, CVE-2026-33116)
- Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network. (CVE-2026-32178)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update to .NET Core 8.0.26, 9.0.15, 10.0.6, or later.See Also
http://www.nessus.org/u?117fa405
http://www.nessus.org/u?8f0a740c
Plugin Details
Severity: High
ID: 307353
File Name: smb_nt_ms26_apr_dotnet_core.nasl
Version: 1.1
Type: Local
Agent: windows
Family: Windows
Published: 4/17/2026
Updated: 4/17/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: High
Base Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2026-26171
CVSS v3
Risk Factor: High
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Information
CPE: cpe:/a:microsoft:.net_core
Required KB Items: installed_sw/.NET Core Windows
Patch Publication Date: 4/1/2026
Vulnerability Publication Date: 4/1/2026
Reference Information
CVE: CVE-2026-26171, CVE-2026-32178, CVE-2026-32203, CVE-2026-33116