CVE-2026-21643

9.8 criticalKEVEPSS 98%

Critical (9.8) in Fortinet FortiClient EMS. In CISA KEV since 2026-04-13. EPSS 98% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 98% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
CISA KEV: listed 2026-04-13, due 2026-04-16
CWE: CWE-89
Published: 2026-02-06
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

fortinet:forticlientems

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

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