CVE-2023-40031— Notepad++ vulnerable to heap buffer write overflow in Utf8_16_Read::convert
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I. Basic Information for CVE-2023-40031
Vulnerability Information
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Vulnerability Title
Notepad++ vulnerable to heap buffer write overflow in Utf8_16_Read::convert
Source: NVD (National Vulnerability Database)
Vulnerability 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++.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Notepad++ 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Notepad++是中国台湾侯今吾（Don Ho）个人开发者的一款开源的纯文本编辑器。 Notepad++ 存在安全漏洞，该漏洞源于在Utf8_16_Read::convert函数中存在堆缓冲区写入溢出漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| notepad-plus-plus | notepad-plus-plus | <= 8.5.6 | - |
II. Public POCs for CVE-2023-40031
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | notepad++堆缓冲区溢出漏洞CVE-2023-40031 分析与复现 | https://github.com/webraybtl/CVE-2023-40031 | POC Details |
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2023-40031
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- https://securitylab.github.com/advisories/GHSL-2023-092_Notepad__/x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2023-40031
Same Patch Batch · notepad-plus-plus · 2023-08-25 · 4 CVEs total
| CVE-2023-40166 | 5.5 MEDIUM | Notepad++ heap buffer read overflow in FileManager::detectLanguageFromTextBegining |
| CVE-2023-40164 | 5.5 MEDIUM | Notepad++ global buffer read overflow in nsCodingStateMachine::NextState |
| CVE-2023-40036 | 5.5 MEDIUM | Notepad++ global buffer read overflow in CharDistributionAnalysis::HandleOneChar |
IV. Related Vulnerabilities
Same product: notepad-plus-plus
- CVE-2026-25926
Notepad++ has an Untrusted Search Path - CVE-2025-15556
Notepad++ < 8.8.9 WinGUp Updater Lacks Update Integrity Veri - CVE-2025-49144
Notepad++ Privilege Escalation in Installer via Uncontrolled - CVE-2023-40166
Notepad++ heap buffer read overflow in FileManager::detectLa - CVE-2023-40164
Notepad++ global buffer read overflow in nsCodingStateMachin
Same vendor: notepad-plus-plus
- CVE-2026-25926
Notepad++ has an Untrusted Search Path - CVE-2025-15556
Notepad++ < 8.8.9 WinGUp Updater Lacks Update Integrity Veri - CVE-2025-49144
Notepad++ Privilege Escalation in Installer via Uncontrolled - CVE-2023-40166
Notepad++ heap buffer read overflow in FileManager::detectLa - CVE-2023-40164
Notepad++ global buffer read overflow in nsCodingStateMachin
Same weakness: CWE-120
- CVE-2026-8260
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Totolink X5000R formDdns sub_458E40 buffer overflow - CVE-2026-6691
MongoDB C Driver Cyrus SASL Canonicalization Buffer Overflow - CVE-2026-7857
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D-Link DI-8100 Web Management url_member.asp buffer overflow
V. Comments for CVE-2023-40031
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