CVE-2023-40031: Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to heap buffer write overflow in `Utf8_16_Read::convert`. This…

PriorityP340high7.8CVSS 3.1

AVLACLPRNUIRSUCHIHAH

EPSS

0.49%

38.6th percentile

Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to heap buffer write overflow in `Utf8_16_Read::convert`. This issue may lead to arbitrary code execution. As of time of publication, no known patches are available in existing versions of Notepad++.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
notepad-plus-plus	notepad	<= 8.5.6	—
notepad-plus-plus	notepad-plus-plus	<= 8.5.6	—

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.