Critical 9.1Known exploited (CISA KEV)Published Feb 6, 2026

CVE-2026-21643An 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 co…

Updated under an hour ago (2026-10-19 04:50 UTC)

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It affects Fortinet FortiClientEMS. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Apr 13, 2026; federal agencies had to remediate by Apr 16, 2026. Treat that date as your deadline.

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Every CVE for Fortinet FortiClientEMS

Exploited in the last 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.

CVSS: 9.1 CRITICAL (v3.1, CNA)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
Weakness (CWE): CWE-89
Known exploited: Added to CISA KEV Apr 13, 2026; federal remediation due Apr 16, 2026Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS (exploitation in the next 30 days): 93.87% (percentile 100)
Assigned by: fortinet
NVD analysis: Analyzed
Record last updated: Apr 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Fortinet FortiClientEMS fortinet:forticlientems	7.4.4	CNA record
fortinet forticlientems fortinet:forticlientems	7.4.4	NVD

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-2026-21643us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.