Detections
Analytics
Notepad++ < 8.9.7 Multiple Vulnerabilities
high Nessus Plugin ID 327203
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Synopsis
A text editor on the remote Windows host is affected by multiple vulnerabilities.Description
The version of Notepad++ installed on the remote host is prior to 8.9.7. It is, therefore, affected by multiple vulnerabilities:- A security bypass vulnerability exists in session.xml backupFilePath handling due to an incomplete starts_with check. An attacker could exploit this to bypass path validation controls. (CVE-2026-52886)
- A stack buffer overflow vulnerability exists in the expandNppEnvironmentStrs function. An attacker could exploit this to execute arbitrary code. (CVE-2026-54758)
- A zip slip (path traversal) vulnerability exists that allows an attacker to write files outside the intended directory when extracting archive contents. (CVE-2026-57233)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Upgrade to Notepad++ version 8.9.7 or later.See Also
Plugin Details
Severity: High
ID: 327203
File Name: notepad_plus_plus_8_9_7.nasl
Version: 1.2
Type: Local
Agent: windows
Family: Windows
Published: 7/16/2026
Updated: 7/17/2026
Configuration: Enable thorough checks (optional)
Supported Sensors: Nessus Agent, Nessus
Risk Information
CVSS v2
Risk Factor: Medium
Base Score: 6.9
Temporal Score: 5.1
Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-54758
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
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:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:notepad-plus-plus:notepad%5c%2b%5c%2b
Required KB Items: installed_sw/Notepad++, SMB/Registry/Enumerated
Exploit Ease: No known exploits are available
Patch Publication Date: 7/14/2026
Vulnerability Publication Date: 7/14/2026