CVE-2026-21643
CRITICAL CISA KEVCVSS v3
9.8
CRITICAL
EPSS Score
0.0%
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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.
CISA Known Exploited Vulnerability
- Date Added
- 4/13/2026
- Patch Due Date
- 4/16/2026
- 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.
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 2/6/2026
- Last Modified
- 2/17/2026
Frequently Asked Questions
What is 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 HTTP requests.
Is CVE-2026-21643 actively exploited?
Yes. CVE-2026-21643 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 4/16/2026.
What is the CVSS score for CVE-2026-21643?
CVE-2026-21643 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.
Is CVE-2026-21643 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.