Notepad++ Project Notepad++ vulnerabilities

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Published CVEs affecting Notepad++ Project Notepad++: 1 record(s), with affected versions and fixes.

CVE-2026-5525 High · 7.8 CWE-121 Apr 10, 2026

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

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).