Fortinet FortiClient EMS: Schwachstelle ermöglicht Codeausführung
WID-SEC-2026-0962 · first 07.04.2026 · updated 07.04.2026 · CVSS 9,8
What it is about
FortiClient ist ein Endgeräteschutz mit einem integrierten VPN-Client. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Fortinet FortiClient EMS 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 FortiClient EMS <7.4.7
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Fortinet FortiClient EMS 7.4.7
Is the vulnerability already being exploited?
- CVE-2026-35616: exploited in the wild according to CISA, in the catalogue since 06.04.2026.
Information and sources
- Original BSI advisory (WID)
- FortiGuard PSIRT Advisory FG-IR-26-099 vom 2026-04-06 www.fortiguard.com
- GitHub Security Advisory GHSA-gvcr-mc93-7p8p vom 2026-04-06 github.com
- CISA Known Exploited Vulnerabilities Catalog vom 2026-04-06 www.cisa.gov
CVE: CVE-2026-35616
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.