---
cve: "CVE-2026-21643"
severity: "CRITICAL"
cvss: 9.1
epss: "94.1%"
vendor: "Fortinet"
kev: true
exploited: true
published: "2026-02-06 09:15:49"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T16:31:24+02:00"
---

# CVE-2026-21643

> 9.1 CRITICAL · ⚠️ CISA KEV (152 Tage) · 🔓 Exploited

## Beschreibung

An improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortinet FortiClientEMS 7.4.4 may allow an unauthenticated attacker to execute unauthorized code or commands via specifically crafted HTTP requests.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://fortiguard.fortinet.com/psirt/FG-IR-25-1142>
- <https://github.com/0xBlackash/CVE-2026-21643/blob/main/cve-2026-21643.py>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21643>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-21643) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_