CVE-2026-5525 | THREATINT

Description

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).

PUBLISHED Reserved 2026-04-04 | Published 2026-04-10 | Updated 2026-04-10 | Assigner securin

MEDIUM: 6.0CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N