CVE-2023-40031: high-severity vulnerability in notepad-plus-plus
Notepad++ vulnerable to heap buffer write overflow in Utf8_16_Read::convert
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.5%
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++.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
notepad-plus-plus · notepad-plus-plusRelated CVEs — notepad-plus-plus
In the same product, most dangerous first.
CVE-2025-15556HIGHNotepad++ < 8.8.9 WinGUp Updater Lacks Update Integrity VerificationEPSS 1.7%KEVCVE-2022-32168HIGHnotepad-plus-plus - DLL HijackingEPSS 0.8%CVE-2025-49144HIGHNotepad++ Privilege Escalation in Installer via Uncontrolled Executable Search PathEPSS 0.7%CVE-2026-48778HIGHNotepad++: Arbitrary Code Execution via config.xml commandLineInterpreterEPSS 0.6%CVE-2026-57233HIGHNotepad++: Path Traversal (Zip Slip) in WinGup Plugin ExtractionEPSS 0.5%CVE-2023-40164MEDIUMNotepad++ global buffer read overflow in nsCodingStateMachine::NextStateEPSS 0.5%