CVE-2026-5525Stack-Based Buffer Overflow in Notepad++ File Drop Handler leads to DoS

Descripción

A stack-based buffer overflow vulnerability exists in Notepad++ version 8.9.3 in the file drop handler component. When a user drags and drops a directory path of exactly 259 characters without a trailing backslash, the application appends a backslash and null terminator without proper bounds checking, resulting in a stack buffer overflow and application crash (STATUS_STACK_BUFFER_OVERRUN).

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/notepad-plus-plus/notepad-plus-plus/issues/17921 ExploitIssue TrackingMitigationVendor Advisory
• https://github.com/notepad-plus-plus/notepad-plus-plus/pull/17930 Issue TrackingPatch
• https://github.com/notepad-plus-plus/notepad-plus-plus/commit/bfe7514d68bc559534c046c4ef2d1865267aa2b0 Patch