CVE-2026-21643
CRITICAL CISA KEV EPSS 99.8%
Published Feb 6, 20264mo ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Published Feb 6, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago
KEV Listed Apr 13, 2026 2mo ago
KEV Due Apr 16, 2026 74d overdue
Description
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
CISA Known Exploited Overdue 74d
- Added
- Apr 13, 2026
- Due
- Apr 16, 2026
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS Exploit Probability
99.8% percentile
Exploit & Patch Status
Actively Exploited (KEV)
No Patch Available
Weaknesses 1
CWE-89 SQL Injection Injection
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| fortinet | forticlientems | 7.4.4 | any |
References 3
- fortiguard.fortinet.com https://fortiguard.fortinet.com/psirt/FG-IR-25-1142
- github.com https://github.com/0xBlackash/CVE-2026-21643/blob/main/cve-2026-21643.py
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21643
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.