CVE-2026-21643 — CRITICAL (9.8)

Vulnerability Description

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 Score

9.8

CRITICAL

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

Affected Products

Vendor	Product	Versions
Fortinet	Forticlientems	7.4.4

Related Weaknesses (CWE)

CWE-89

References

https://fortiguard.fortinet.com/psirt/FG-IR-25-1142Vendor Advisory
https://github.com/0xBlackash/CVE-2026-21643/blob/main/cve-2026-21643.pyExploit
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-US Government Resource

FAQ

What is CVE-2026-21643?

CVE-2026-21643 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 cod...

How severe is CVE-2026-21643?

CVE-2026-21643 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-21643?

Check the references section above for vendor advisories and patch information. Affected products include: Fortinet Forticlientems.