Fortinet FortiAnalyzer, FortiManager, FortiOS und FortiProxy: Schwachstelle ermöglicht Erlangen von Administratorrechten
WID-SEC-2026-0226 · first 28.01.2026 · updated 28.01.2026 · CVSS 9,8
What it is about
FortiAnalyzer ist eine Plattform zur Protokollverwaltung, Analyse und Berichterstellung. FortiManager Security Management Appliances ermöglicht die Verwaltung von Fortinet Network Security Geräten. FortiOS ist ein gehärtetes Betriebssystem für FortiGate Plattformen. FortiProxy ist eine Web-Proxy Lösung. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Fortinet FortiAnalyzer, Fortinet FortiManager, Fortinet FortiOS und Fortinet FortiProxy ausnutzen, um die Authentifizierung zu umgehen und so Administratorrechte zu erlangen.
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
- die Authentifizierung zu umgehen
- so Administratorrechte zu erlangen
Am I affected?
Affected according to the BSI:
- Fortinet FortiAnalyzer <7.6.6
- Fortinet FortiAnalyzer <7.4.10
- Fortinet FortiAnalyzer <7.2.12
- Fortinet FortiAnalyzer <7.0.16
- Fortinet FortiManager <7.6.6
- Fortinet FortiManager <7.4.10
- Fortinet FortiManager <7.2.13
- Fortinet FortiManager <7.0.16
- Fortinet FortiOS <7.6.6
- Fortinet FortiOS <7.4.11
- Fortinet FortiOS <7.2.13
- Fortinet FortiOS <7.0.19
and 2 more
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Fortinet FortiAnalyzer 7.6.6
- Fortinet FortiAnalyzer 7.4.10
- Fortinet FortiAnalyzer 7.2.12
- Fortinet FortiAnalyzer 7.0.16
- Fortinet FortiManager 7.6.6
- Fortinet FortiManager 7.4.10
- Fortinet FortiManager 7.2.13
- Fortinet FortiManager 7.0.16
- Fortinet FortiOS 7.6.6
- Fortinet FortiOS 7.4.11
- Fortinet FortiOS 7.2.13
- Fortinet FortiOS 7.0.19
Is the vulnerability already being exploited?
- CVE-2026-24858: exploited in the wild according to CISA, in the catalogue since 27.01.2026.
Information and sources
- Original BSI advisory (WID)
- FortiGuard PSIRT Advisory FG-IR-26-060 vom 2026-01-27 www.fortiguard.com
- FortiGuard PSIRT Blog vom 2026-01-27 www.fortinet.com
CVE: CVE-2026-24858
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.