Notepad++: Schwachstelle ermöglicht Codeausführung
WID-SEC-2026-1696 · first 28.05.2026 · updated 29.06.2026 · CVSS 7,8
What it is about
Notepad++ ist ein Open-Source-Editor, der viele Programmiersprachen unter Microsoft Windows unterstützt. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Notepad++ ausnutzen, um beliebigen Programmcode auszuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- beliebigen Programmcode auszuführen
Am I affected?
Affected according to the BSI:
- Open Source Notepad++ <8.9.6.1
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++ 8.9.6.1
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
- Original BSI advisory (WID)
- GitHub Security Advisory GHSA-3x3f-3j39-pj3v vom 2026-05-27 mit PoC github.com
CVE: CVE-2026-48800, CVE-2026-52884
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.