Stack-based Buffer Overflow Affecting notepad-plus-plus/notepad-plus-plus package, versions [,8.9.4)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-NOTEPADPLUSPLUSNOTEPADPLUSPLUS-16122134
- published22 Apr 2026
- disclosed10 Apr 2026
- creditUnknown
Introduced: 10 Apr 2026
CVE-2026-5525 (opens in a new tab)How to fix?
Upgrade notepad-plus-plus/notepad-plus-plus to version 8.9.4 or higher.
Overview
Affected versions of this package are vulnerable to Stack-based Buffer Overflow in the file drop handler component. An attacker can cause the application to crash by dragging and dropping a directory path of exactly 259 characters without a trailing backslash, which triggers improper bounds checking and results in a stack buffer overflow.