Fortinet FortiOS: Mehrere Schwachstellen ermöglichen Codeausführung und DoS
WID-SEC-2026-2812 · first 13.08.2026 · updated 13.08.2026 · CVSS 5,6
What it is about
FortiOS ist ein gehärtetes Betriebssystem für FortiGate Plattformen. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Fortinet FortiOS ausnutzen, um beliebigen Programmcode auszuführen oder einen Denial-of-Service-Zustand auszulösen.
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 oder einen Denial-of-Service-Zustand auszulösen
Am I affected?
Affected according to the BSI:
- Fortinet FortiOS <7.6.7
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Fortinet FortiOS 7.6.7
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
- Original BSI advisory (WID)
- FortiGuard Labs PSIRT Advisory FG-IR-26-162 vom 2026-08-12 www.fortiguard.com
- FortiGuard Labs PSIRT Advisory FG-IR-26-161 vom 2026-08-12 www.fortiguard.com
CVE: CVE-2026-71407, CVE-2026-71408
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.