# Notepad++ Notepad\+\+ vulnerabilities

Source: https://junglewise.ai/threats/technologies/notepad  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 11 November 2026, 22:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/notepad.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 20 vulnerabilities in Notepad++ Notepad\+\+: 0 in the last 7 days and 9 in the last 90 days, 1 of them critical and 1 exploited in the wild. The most recent, CVE-2026-86056, was published on 22 September 2026. Nothing in the last four weeks, down from 5 vulnerabilities in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 9
- All time: 20 (1 critical, 1 exploited in the wild)

## About Notepad++ Notepad\+\+

Notepad++ is a free source code editor and Notepad replacement that supports several languages.

## Latest Notepad++ Notepad\+\+ vulnerabilities

- [CVE-2026-86056: Notepad++ null pointer dereference in NPPM_SAVESESSION handler](https://junglewise.ai/threats/cve-2026-86056-notepad-is-a-free-and-open-source-source-code-editor-prior-to-8-9) (medium, CVSS 5.5, published 22 Sep 2026)
- [CVE-2026-86054: Notepad++ stack buffer overflow in session path handling](https://junglewise.ai/threats/cve-2026-86054-notepad-is-a-free-and-open-source-source-code-editor-prior-to-8-9) (high, CVSS 7.8, published 22 Sep 2026)
- [CVE-2026-85995: Notepad++ Authenticode signature verification bypass](https://junglewise.ai/threats/cve-2026-85995-notepad-is-a-free-and-open-source-source-code-editor-from-8-9-7) (high, CVSS 7.3, published 22 Sep 2026)
- [CVE-2026-85288: Notepad++ HMAC validation bypass in macro execution](https://junglewise.ai/threats/cve-2026-85288-notepad-is-a-free-and-open-source-source-code-editor-prior-to-8-9) (medium, CVSS 6.7, published 22 Sep 2026)
- [CVE-2026-77605: Notepad++ arbitrary code execution via path traversal in Folder as Workspace](https://junglewise.ai/threats/cve-2026-77605-notepad-is-a-free-and-open-source-source-code-editor-prior-to-8-9) (high, CVSS 7.8, published 22 Sep 2026)
- [CVE-2026-71858: Notepad++ shortcuts.xml macro HMAC validation bypass](https://junglewise.ai/threats/cve-2026-71858-notepad-shortcuts-xml-macro-hmac-validation-bypass) (info, published 17 Aug 2026)
- [CVE-2026-57233: Notepad++ path traversal in WinGup plugin extraction](https://junglewise.ai/threats/cve-2026-57233-notepad-path-traversal-in-wingup-plugin-extraction) (high, CVSS 8.1, published 17 Aug 2026)
- [CVE-2026-54758: Notepad++ stack buffer overflow in expandNppEnvironmentStrs](https://junglewise.ai/threats/cve-2026-54758-notepad-stack-buffer-overflow-in-expandnppenvironmentstrs) (high, CVSS 7.8, published 17 Aug 2026)
- [CVE-2026-52886: Notepad++ path traversal via session.xml backupFilePath](https://junglewise.ai/threats/cve-2026-52886-notepad-path-traversal-via-session-xml-backupfilepath) (info, published 17 Aug 2026)
- [CVE-2026-73250: Notepad++ command injection in Windows installer](https://junglewise.ai/threats/cve-2026-73250-notepad-command-injection-in-windows-installer) (info, published 11 Aug 2026)
- [CVE-2026-52885: Notepad++ TOCTOU race condition in shortcuts.xml HMAC check](https://junglewise.ai/threats/cve-2026-52885-notepad-toctou-race-condition-in-shortcuts-xml-hmac-check) (info, CVSS 7.5, published 26 Jun 2026)
- [CVE-2026-52884: Notepad++ path traversal and security bypass in shortcuts command validation](https://junglewise.ai/threats/cve-2026-52884-notepad-path-traversal-and-security-bypass-in-shortcuts-command) (high, CVSS 7.8, published 26 Jun 2026)
- [CVE-2026-48800: Notepad++ OS command injection in UserDefinedCommands](https://junglewise.ai/threats/cve-2026-48800-notepad-os-command-injection-in-userdefinedcommands) (high, CVSS 7.8, published 26 Jun 2026)
- [CVE-2026-48778: Notepad++ OS command injection in commandLineInterpreter configuration](https://junglewise.ai/threats/cve-2026-48778-notepad-os-command-injection-in-commandlineinterpreter) (high, CVSS 7.8, published 26 Jun 2026)
- [CVE-2026-48770: Notepad++ out-of-bounds read in WM_COPYDATA handler](https://junglewise.ai/threats/cve-2026-48770-notepad-out-of-bounds-read-in-wm-copydata-handler) (medium, CVSS 5, published 26 Jun 2026)
- [CVE-2026-46710: Notepad++ privilege escalation in installer via untrusted search path](https://junglewise.ai/threats/cve-2026-46710-notepad-privilege-escalation-in-installer-via-untrusted-search) (info, CVSS 7.5, published 26 Jun 2026)
- [CVE-2021-47944: memono Notepad denial of service via excessive character input](https://junglewise.ai/threats/cve-2021-47944-memono-notepad-denial-of-service-via-excessive-character-input) (high, CVSS 7.5, published 10 May 2026)
- [CVE-2026-6539: Notepad++ 8.9.3 contains a format string injection vulnerability in the Find Results panel handler that allows…](https://junglewise.ai/threats/cve-2026-6539-notepad-8-9-3-contains-a-format-string-injection-vulnerability-in) (medium, CVSS 4.4, published 30 Apr 2026)
- [CVE-2026-5525: Notepad++ stack buffer overflow in file drop handler](https://junglewise.ai/threats/cve-2026-5525-notepad-stack-buffer-overflow-in-file-drop-handler) (medium, CVSS 6, published 10 Apr 2026)
- [CVE-2025-15556: Notepad++ code execution via WinGUp updater integrity failure](https://junglewise.ai/threats/cve-2025-15556-notepad-code-execution-via-wingup-updater-integrity-failure) (critical, exploited in the wild, CVSS 7.5, published 12 Feb 2026)

## Most severe Notepad++ Notepad\+\+ vulnerabilities

- [CVE-2025-15556: Notepad++ code execution via WinGUp updater integrity failure](https://junglewise.ai/threats/cve-2025-15556-notepad-code-execution-via-wingup-updater-integrity-failure) (critical, exploited in the wild, CVSS 7.5, published 12 Feb 2026)
- [CVE-2026-57233: Notepad++ path traversal in WinGup plugin extraction](https://junglewise.ai/threats/cve-2026-57233-notepad-path-traversal-in-wingup-plugin-extraction) (high, CVSS 8.1, published 17 Aug 2026)
- [CVE-2026-86054: Notepad++ stack buffer overflow in session path handling](https://junglewise.ai/threats/cve-2026-86054-notepad-is-a-free-and-open-source-source-code-editor-prior-to-8-9) (high, CVSS 7.8, published 22 Sep 2026)
- [CVE-2026-77605: Notepad++ arbitrary code execution via path traversal in Folder as Workspace](https://junglewise.ai/threats/cve-2026-77605-notepad-is-a-free-and-open-source-source-code-editor-prior-to-8-9) (high, CVSS 7.8, published 22 Sep 2026)
- [CVE-2026-54758: Notepad++ stack buffer overflow in expandNppEnvironmentStrs](https://junglewise.ai/threats/cve-2026-54758-notepad-stack-buffer-overflow-in-expandnppenvironmentstrs) (high, CVSS 7.8, published 17 Aug 2026)
- [CVE-2026-52884: Notepad++ path traversal and security bypass in shortcuts command validation](https://junglewise.ai/threats/cve-2026-52884-notepad-path-traversal-and-security-bypass-in-shortcuts-command) (high, CVSS 7.8, published 26 Jun 2026)
- [CVE-2026-48800: Notepad++ OS command injection in UserDefinedCommands](https://junglewise.ai/threats/cve-2026-48800-notepad-os-command-injection-in-userdefinedcommands) (high, CVSS 7.8, published 26 Jun 2026)
- [CVE-2026-48778: Notepad++ OS command injection in commandLineInterpreter configuration](https://junglewise.ai/threats/cve-2026-48778-notepad-os-command-injection-in-commandlineinterpreter) (high, CVSS 7.8, published 26 Jun 2026)
- [CVE-2021-47944: memono Notepad denial of service via excessive character input](https://junglewise.ai/threats/cve-2021-47944-memono-notepad-denial-of-service-via-excessive-character-input) (high, CVSS 7.5, published 10 May 2026)
- [CVE-2026-85995: Notepad++ Authenticode signature verification bypass](https://junglewise.ai/threats/cve-2026-85995-notepad-is-a-free-and-open-source-source-code-editor-from-8-9-7) (high, CVSS 7.3, published 22 Sep 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 5 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 4 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 5 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Notepad++ Notepad\+\+ vulnerabilities", https://junglewise.ai/threats/technologies/notepad, 11 November 2026.