Vulnerability · Published Aug 25, 2023 · Assigned by GitHub_M

CVE-2023-40031Notepad++ vulnerable to heap buffer write overflow in Utf8_16_Read::convert

High 7.8

In plain English

A high-severity buffer overflow in notepad-plus-plus from notepad-plus-plus. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.5%top 55.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack tooling1Public PoC

Official description

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 products (as reported)

Vendor	Product	Versions
notepad-plus-plus	notepad-plus-plus	<= 8.5.6

Weakness: CWE-120, CWE-122 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://securitylab.github.com/advisories/GHSL-2023-092_Notepad__/ x_refsource_CONFIRM