This report was translated by AI; nobody has reviewed the translation yet. Original language: Czech.

[TLP:CLEAR] Fortinet fixes a critical vulnerability

Fortinet fixes a critical vulnerability in FortiClientEMS with version 7.4.5 [1].

Fortinet FortiClientEMS - RCE (CVE-2026-21643)
CVSS 9.8 (Critical)

An unauthenticated remote attacker can execute unauthorized code or commands by sending specially crafted HTTP requests [1].

The vulnerability is present in product:

  • FortiClientEMS; =7.4.4

CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

More information:

  • CVE-2026-21643 at cve.org, NVD
  • CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') at cwe.mitre.org

The vulnerability was publicly disclosed 6. 2. 2026.


By CESNET, z.s.p.o. Michaela Jarošová on 9. 2. 2026.

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