ConnectWise ScreenConnect: Schwachstelle ermöglicht Codeausführung
WID-SEC-2026-3256 · first 09.09.2026 · updated 10.09.2026 · CVSS 7,8
What it is about
ConnectWise ScreenConnect ist eine Softwarelösung für Fernzugriff, Fernsupport und Fernwartung von Computern, Servern, virtuellen Maschinen und mobilen Geräten. Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in ConnectWise ScreenConnect ausnutzen, um Code auszuführen.
Under what conditions?
Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.
What can happen in the worst case
An attacker could use the vulnerability to
- Code auszuführen
Am I affected?
Affected according to the BSI:
- ConnectWise ScreenConnect
- ConnectWise ScreenConnect <26.6.5
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- ConnectWise ScreenConnect 26.6.5
Is the vulnerability already being exploited?
- CVE-2026-84869: exploited in the wild according to CISA, in the catalogue since 11.09.2026.
Information and sources
- Original BSI advisory (WID)
- Connectwise Advisory vom 2026-09-08 www.connectwise.com
- Connectwise Security Bulletin vom 2026-09-09 www.connectwise.com
CVE: CVE-2026-84869
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.