Detections
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Microsoft Windows Notepad < 11.2510 Command Injection (February 2026)

high Nessus Plugin ID 298646

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Synopsis

The Windows app installed on the remote host is affected by a command injection vulnerability.

Description

The Windows 'Microsoft Windows Notepad' app installed on the remote host is prior to version 11.2510. It is, therefore, affected by a command injection vulnerability:

 - Improper neutralization of special elements used in a command allows an unauthorized attacker to execute code over a network. (CVE-2026-20841)

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

Solution

Upgrade to app version 11.2510 or later via the Microsoft Store.

See Also

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20841

Plugin Details

Severity: High

ID: 298646

File Name: smb_nt_ms26_feb_notepad.nasl

Version: 1.4

Type: local

Agent: windows

Published: 2/11/2026

Updated: 2/13/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2026-20841

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

CPE: x-cpe:/a:microsoft:windows_notepad, cpe:/o:microsoft:windows

Required KB Items: SMB/Registry/Enumerated, WMI/Windows App Store/Enumerated

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/10/2026

Vulnerability Publication Date: 2/10/2026

Reference Information

CVE: CVE-2026-20841

IAVA: 2026-A-0114