Threat landscape
high

Notepad++: Mehrere Schwachstellen

WID-SEC-2026-2312 · first 14.07.2026 · updated 18.08.2026 · CVSS 7,8

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What it is about

Notepad++ ist ein Open-Source-Editor, der viele Programmiersprachen unter Microsoft Windows unterstützt. Ein Angreifer kann mehrere Schwachstellen in Notepad++ ausnutzen, um beliebigen Programmcode auszuführen, um Informationen offenzulegen, um Dateien zu manipulieren, und um Sicherheitsvorkehrungen zu umgehen.

Under what conditions?

The BSI does not name any particular preconditions.

What can happen in the worst case

An attacker could use the vulnerability to

  • beliebigen Programmcode auszuführen
  • Informationen offenzulegen
  • Dateien zu manipulieren
  • Sicherheitsvorkehrungen zu umgehen

Am I affected?

Affected according to the BSI:

  • Open Source Notepad++ <8.9.7

The installed version is usually shown under “Help → About” or in the device’s admin interface.

What helps?

Update to at least:

  • Open Source Notepad++ 8.9.7

Is the vulnerability already being exploited?

None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.

Information and sources

CVE: CVE-2026-52886, CVE-2026-54758, CVE-2026-57233, CVE-2026-71858, CVE-2026-73250

Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.

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