CVE-2026-86054highCWE-121

CVE-2026-86054: fallo de gravedad alta en notepad-plus-plus

Notepad++: Stack Buffer Overflow in `NppParameters::writeSession` via overlong session path

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear notepad-plus-plus

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

21Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 7.8epss 0.2%
Notepad++ is a free and open-source source code editor. Prior to 8.9.8, Notepad++ contains a stack buffer overflow in NppParameters::writeSession in PowerEditor/src/Parameters.cpp because it copies a session path derived from -settingsDir= into backupPathName[MAX_PATH] with unbounded wcscpy and appends SESSION_BACKUP_EXT with unbounded wcscat. A sufficiently long settings directory causes the backup suffix to exceed the fixed stack buffer when Notepad++ saves the session, and the protected release build terminates through its stack canary, causing denial of service. This issue is fixed in version 8.9.8.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Productos afectados
notepad-plus-plus · notepad-plus-plus
CVEs relacionadas — notepad-plus-plus

En el mismo producto, de las más peligrosas a las menos.

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-2023-40031HIGHNotepad++ vulnerable to heap buffer write overflow in Utf8_16_Read::convertEPSS 0.5%CVE-2026-57233HIGHNotepad++: Path Traversal (Zip Slip) in WinGup Plugin ExtractionEPSS 0.5%