SQL Injection in Fortinet Forticlientems

CVE-2026-21643

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…

Vulnerability class: SQL Injection

EPSS: 0.625 (98.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: 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.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

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.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-21643?
CVE-2026-21643 is a critical-severity vulnerability in Fortinet Forticlientems, classified under SQL Injection. CVSS score: 9.1/10. Published 2026-02-06.
How severe is CVE-2026-21643?
Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2026-21643 known to be exploited?
Yes. CVE-2026-21643 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-04-13), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.