SonicWall Global VPN Client: Schwachstelle ermöglicht Denial of Service
WID-SEC-2026-2714 · first 10.08.2026 · updated 10.08.2026 · CVSS 5,5
What it is about
SonicWall VPN-Clients bauen gesicherte Verbindungen (Virtual Private Network) zu SonicWall Firewall Produkten auf. Ein lokaler Angreifer kann eine Schwachstelle in SonicWall Global VPN Client ausnutzen, um einen Denial of Service Angriff durchzuführen.
Under what conditions?
Only with access to the device or an account on it. Often the second step after a phishing email.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Denial of Service Angriff durchzuführen
Am I affected?
Affected according to the BSI:
- SonicWall Global VPN Client <5.0.0.2008
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- SonicWall Global VPN Client 5.0.0.2008
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)
- Sonicwall Security Advisory vom 2026-08-09 psirt.global.sonicwall.com
CVE: CVE-2026-66151
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.