Vulnerability · Published Aug 25, 2023 · Assigned by GitHub_M

CVE-2023-40166Notepad++ heap buffer read overflow in FileManager::detectLanguageFromTextBegining

Medium 5.5

In plain English

A medium-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 0.4% (higher than 36% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium

Exploit odds (30 days)0.4%top 64.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to heap buffer read overflow in `FileManager::detectLanguageFromTextBegining `. The exploitability of this issue is not clear. Potentially, it may be used to leak internal memory allocation information. 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:N/A:N

References

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