Fortinet FortiProxy und FortiOS: Mehrere Schwachstellen
WID-SEC-2026-2329 · first 15.07.2026 · updated 15.07.2026 · CVSS 4,3
What it is about
FortiOS ist ein gehärtetes Betriebssystem für FortiGate Plattformen. FortiProxy ist eine Web-Proxy Lösung. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Fortinet FortiOS und Fortinet FortiProxy ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren und Informationen offenzulegen.
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
- Sicherheitsvorkehrungen zu umgehen
- Daten zu manipulieren
- Informationen offenzulegen
Am I affected?
Affected according to the BSI:
- Fortinet FortiOS <7.4.9
- Fortinet FortiOS <7.6.4
- Fortinet FortiOS <7.6.5
- Fortinet FortiProxy <7.6.6
- Fortinet FortiProxy <7.6.5
- Fortinet FortiProxy <7.4.14
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Fortinet FortiOS 7.4.9
- Fortinet FortiOS 7.6.4
- Fortinet FortiOS 7.6.5
- Fortinet FortiProxy 7.6.6
- Fortinet FortiProxy 7.6.5
- Fortinet FortiProxy 7.4.14
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-26-152 vom 2026-07-14 www.fortiguard.com
- FortiGuard Labs PSIRT Advisory FG-IR-26-153 vom 2026-07-14 www.fortiguard.com
- FortiGuard Labs PSIRT Advisory FG-IR-26-154 vom 2026-07-14 www.fortiguard.com
CVE: CVE-2025-62675, CVE-2025-62826, CVE-2025-43892, CVE-2026-59840
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.