Fortinet FortiSIEM: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode mit den Rechten des Dienstes
WID-SEC-2026-0087 · first 14.01.2026 · updated 14.01.2026 · CVSS 9,8
What it is about
FortiSIEM ist eine SIEM-Lösung (Security Information and Event Management), die eine Echtzeitanalyse von Sicherheitswarnungen ermöglicht. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Fortinet FortiSIEM ausnutzen, um beliebigen Programmcode mit den Rechten des Dienstes 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 mit den Rechten des Dienstes auszuführen
Am I affected?
Affected according to the BSI:
- Fortinet FortiSIEM <7.4.1
- Fortinet FortiSIEM <7.3.5
- Fortinet FortiSIEM <7.2.7
- Fortinet FortiSIEM <7.1.9
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Fortinet FortiSIEM 7.4.1
- Fortinet FortiSIEM 7.3.5
- Fortinet FortiSIEM 7.2.7
- Fortinet FortiSIEM 7.1.9
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)
- FortiGuard PSIRT Advisory FG-IR-25-772 vom 2026-01-13 www.fortiguard.com
- Horizon3 Blog vom 2026-01-13 horizon3.ai
CVE: CVE-2025-64155
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.