SonicWall SonicOS: Mehrere Schwachstellen ermöglichen Denial of Service
WID-SEC-2026-0495 · first 24.02.2026 · updated 05.03.2026 · CVSS 4,9
What it is about
SonicOS ist das Betriebssystem von SonicWall Firewall-Produkten. Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in SonicWall SonicOS ausnutzen, um einen Denial of Service Angriff durchzuführen.
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
- einen Denial of Service Angriff durchzuführen
Am I affected?
Affected according to the BSI:
- SonicWall SonicOS Gen 7 <7.3.2-7010
- SonicWall SonicOS Gen 8 <8.2.0-8009
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- SonicWall SonicOS Gen 7 7.3.2-7010
- SonicWall SonicOS Gen 8 8.2.0-8009
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 2026-02-23 psirt.global.sonicwall.com
CVE: CVE-2026-0399, CVE-2026-0400, CVE-2026-0401, CVE-2026-0402, CVE-2026-3439
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.