Notepad++ 8.9.8
Notepad++ 8.9.8, released August 23, 2026, fixes 4 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Superseded.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 4 CVEs
Applies to
| Product | Version |
|---|---|
| Notepad++ | 8.9.8 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-86054 | Notepad++: Stack Buffer Overflow in `NppParameters::writeSession` via overlong session path | 7.8 | 0.0023 | None reported |
| High | CVE-2026-85995 | Notepad++: Authenticode verification bypass allows modified updater execution | 7.3 | 0.0012 | None reported |
| Routine | CVE-2026-86056 | Notepad++: Null pointer dereference in NPPM_SAVESESSION message handler causes crash (DoS) | 5.5 | 0.0016 | None reported |
| Routine | CVE-2026-85288 | Notepad++: Shortcuts.xml macro HMAC bypass still reachable via the "Run a Macro Multiple Times" dialog | 6.7 | 0.0014 | None reported |
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