Notepad++ 8.9.4
Notepad++ 8.9.4, released April 26, 2026, fixes 3 CVEs in Notepad++. None of them is reported as exploited. Patch Radar priority: High. The latest Notepad++ is 8.9.9, which also fixes every one of these CVEs.
Superseded. The latest Notepad++ is 8.9.9, which also fixes every CVE on this page. Install that instead.
Priority of the 3 CVEs
Applies to
| Product | Version |
|---|---|
| Notepad++ | 8.9.4 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-5525 | Stack-Based Buffer Overflow in Notepad++ File Drop Handler leads to DoS | 7.8 | 0.0017 | None reported |
| Routine | CVE-2026-3008 | Vulnerability in Notepad++ | 6.6 | 0.0022 | None reported |
| Routine | CVE-2026-6539 | Notepad++ 8.9.3 Format String Injection via nativeLang.xml | 4.6 | 0.0019 | None reported |
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