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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| notepad-plus-plus | notepad-plus-plus | <= 8.5.6 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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webraybtl/CVE-2023-40031 ★ 15 · Sep 8, 2023
notepad++堆缓冲区溢出漏洞CVE-2023-40031 分析与复现
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- VDE-2024-003 TRUMPF: Multiple products include a vulnerable version of Notepad++ CERT@VDE · May 22, 2025
- WID-SEC-2023-2188 Notepad++: Mehrere Schwachstellen ermöglichen Codeausführung BSI CERT-Bund (WID) · Sep 11, 2023