Critical Fortinet FortiClient EMS bug under active attack (CVE-2026-21643)

Critical Fortinet FortiClient EMS bug under active attack (CVE-2026-21643) Help Net Security

Early report Major update Updated Mar 30, 2026, 12:19 PM UTC

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What changed

New report from Watch search #114: Vulnerability Active Exploitation 11h ago.

First seen Mar 30, 2026, 12:19 PM UTC Latest source Mar 30, 2026, 12:19 PM UTC

Update 1 11h ago

Critical Fortinet FortiClient EMS bug under active attack (CVE-2026-21643)

Watch search #114: Vulnerability Active Exploitation •published Mar 30, 2026, 12:19 PM UTC •fetched Mar 30, 2026, 10:23 PM UTC

Event stats

Reports 1

Sources 1

Confidence low

Score 45

Entity focus

CriticalFortinetFortiEMSCVE

Source spread

Watch search #114: Vulnerability Active Exploitation

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