PT-2026-31894 · Notepad++ · Notepad++
CVE-2026-5525
·
Published
2026-04-10
·
Updated
2026-06-05
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Notepad++ version 8.9.3
Description
A stack-based buffer overflow exists 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.
Recommendations
Update to a newer version that contains a fix for this vulnerability.
Exploit
Fix
DoS
Stack Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Notepad++