Fortinet FortiAuthenticator: Schwachstelle ermöglicht Codeausführung
WID-SEC-2026-1509 · first 13.05.2026 · updated 13.05.2026 · CVSS 9,8
What it is about
FortiAuthenticator erweitert die Fähigkeit zur Multi-Faktor-Authentifizierung auf mehrere FortiGate Appliances und auf Lösungen von Drittanbietern, die RADIUS oder LDAP unterstützen. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Fortinet FortiAuthenticator ausnutzen, um beliebigen Programmcode auszuführen.
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
Am I affected?
Affected according to the BSI:
- Fortinet FortiAuthenticator <8.0.3
- Fortinet FortiAuthenticator <6.6.9
- Fortinet FortiAuthenticator <6.5.7
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Fortinet FortiAuthenticator 8.0.3
- Fortinet FortiAuthenticator 6.6.9
- Fortinet FortiAuthenticator 6.5.7
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 PSIRT Advisory FG-IR-26-128 vom 2026-05-12 fortiguard.fortinet.com
CVE: CVE-2026-44277
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.