Insufficient verification of data authenticity in Notepad++ - CVE-2026-85288
Published: August 24, 2026 / Updated: September 23, 2026
Vulnerability identifier: #VU144995
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-85288
CWE-ID: CWE-345
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to execute arbitrary commands.
The vulnerability exists due to insufficient verification of data authenticity in the shortcuts.xml macro playback path when running a tampered macro through the "Run a Macro Multiple Times" dialog. A local user can supply a crafted shortcuts.xml macro and trigger it through the dialog to execute arbitrary commands.
User interaction is required to run the macro through the dialog.
Affected software
Notepad++
How to mitigate CVE-2026-85288
Install security update from vendor's website.
Notepad++ - update to 8.9.8