CVE-2026-21643CRITICAL 9.8CISA KEVEPSS p99.8%

CVE-2026-21643Fortinet FortiClient EMS SQL Injection Vulnerability

Fortinet / FortiClient EMS

Description

Fortinet FortiClient EMS contains a SQL injection vulnerability that may allow an unauthenticated attacker to execute unauthorized code or commands via specifically crafted HTTP requests.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS94.08% probability of exploitation · percentile 99.8% · 2026-06-15T12:03:41Z
Published2026-02-06
Last modified2026-04-16

CISA KEV entry

Added to KEV: 2026-04-13

Underlying weaknesses· 1

CWE-89

References

  1. https://fortiguard.fortinet.com/psirt/FG-IR-25-1142
  2. https://github.com/0xBlackash/CVE-2026-21643/blob/main/cve-2026-21643.py
  3. https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21643

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in an SQL Command ('SQL Injection')cwe-890%live

(incoming)1

TypeTargetConfidenceTier
KEVEntryFortinet FortiClient EMS SQL Injection Vulnerabilitykev-cve-2026-216430%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
Fortinet FortiWeb SQL Injection Vulnerability
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Fortinet FortiClient EMS Improper Access Control Vulnerability
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CVE-2026-39815
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CVE-2026-25088
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CVE-2025-58692
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Fortinet Multiple Products Format String Vulnerability
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.