Vulnerability intelligence
CVE-2026-21643
Fortinet FortiClient EMS SQL Injection Vulnerability
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
9.1
Critical
EPSS — Exploit Probability
94%
Riskier than 100% of all CVEs
Exploitation
Confirmed in the wild
Used in ransomware campaigns
Remediation
Patch available
Federal deadline 2026-04-16
CISA 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. Deadline for federal agencies: 2026-04-16.
7 articles across 6 outlets · first covered Mar 31, 2026 · latest Apr 14, 2026
Tracked incidents
Coverage timeline
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CISA adds six KEV flaws amid active Fortinet exploitsthehackernews.com · Apr 14, 2026
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CISA adds critical Fortinet FortiClient EMS SQLi flaw to KEV listwww.cisa.gov · Apr 13, 2026
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CISA adds critical Fortinet FortiClient EMS SQLi flaw to KEV listcisa.gov · Apr 13, 2026
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Fortinet issues fix for FortiClient EMS zero day CVE-2026-35616www.darkreading.com · Apr 6, 2026
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Fortinet warns of critical CVE-2026-35616 flaw in FortiClient EMSsocradar.io · Apr 6, 2026
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Fortinet Rushes Emergency Fixes for Exploited Zero-Daywww.securityweek.com · Apr 6, 2026
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Exploitation of Critical Fortinet FortiClient EMS Flaw Beginswww.securityweek.com · Mar 31, 2026