Fortinet FortiOS: Mehrere Schwachstellen
WID-SEC-2026-0496 · first 22.05.2018 · updated 25.02.2026 · CVSS 6,5
What it is about
FortiOS ist ein gehärtetes Betriebssystem für FortiGate Plattformen. Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Fortinet FortiOS ausnutzen, um Informationen offenzulegen oder seine Rechte zu erweitern.
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
- Informationen offenzulegen oder seine Rechte zu erweitern
Am I affected?
Affected according to the BSI:
- Fortinet FortiOS <5.6.3
- Fortinet FortiOS <5.4.9
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Fortinet FortiOS 5.6.3
- Fortinet FortiOS 5.4.9
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)
- Fortinet Advisories vom 2018-05-21 fortiguard.com
- Fortinet Advisories vom 2018-05-21 fortiguard.com
- PoC auf GitHub vom 2026-02-24 github.com
CVE: CVE-2017-14185, CVE-2017-14187
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.