# 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.

- Web page: https://patchblox.com/security/fix/windows-app/notepad-.notepad-8.9.8
- Platform: Windows apps
- Released: Aug 23, 2026
- Priority: High (Closes CVE-2026-86054, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0
- Superseded by: [Notepad++ 8.9.9](https://patchblox.com/security/data/product/windows-app/notepad.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Notepad++](https://patchblox.com/security/data/product/windows-app/notepad.md) |  | 8.9.8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-86054](https://patchblox.com/security/data/cve/CVE-2026-86054.md) | High | Notepad++: Stack Buffer Overflow in `NppParameters::writeSession` via overlong session path | 7.8 | 0.0023 |  |
| [CVE-2026-85995](https://patchblox.com/security/data/cve/CVE-2026-85995.md) | High | Notepad++: Authenticode verification bypass allows modified updater execution | 7.3 | 0.0012 |  |
| [CVE-2026-86056](https://patchblox.com/security/data/cve/CVE-2026-86056.md) | Routine | Notepad++: Null pointer dereference in NPPM_SAVESESSION message handler causes crash (DoS) | 5.5 | 0.0016 |  |
| [CVE-2026-85288](https://patchblox.com/security/data/cve/CVE-2026-85288.md) | Routine | Notepad++: Shortcuts.xml macro HMAC bypass still reachable via the "Run a Macro Multiple Times" dialog | 6.7 | 0.0014 |  |

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Data as of 2026-11-10T07:50:38Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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