CVE DATABASE / CVE-2026-21643
CVE-2026-21643
Fortinet FortiClient EMS SQL Injection Vulnerability
Confirmed exploited in the wild. Added 2026-04-13.
Federal remediation due 2026-04-16.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Summary
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 3.1 breakdown
| Base score | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Use our free CVE Lookup tool for the latest NVD record, or browse the full CISA KEV catalog.
References
- 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
Data: NIST NVD + CISA KEV. NVD last modified 2026-04-16. Always verify against the vendor advisory before acting.