VULNERABILITY INTELLIGENCE

CVE-2026-5525

CVSS score6 MEDIUM
EPSS probability0.17%
CISA KEVNot currently listed
Published2026-04-10
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

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).

Weakness classification

  • 33c584b5-0579-4c06-b2a0-8d8329fcab9c: CWE-121

Primary references