Fortinet Patches Critical SQLi Flaw Enabling Unauthenticated Code Execution
Summary
Fortinet has patched a critical SQL injection vulnerability, CVE-2026-21643, in FortiClientEMS which could allow unauthenticated remote code execution. The flaw has a CVSS score of 9.1 and stems from improper neutralization of special elements in SQL commands.
IFF Assessment
FOE
A critical vulnerability allowing remote code execution is always bad news for defenders.
Severity
9.1
Critical
Defender Context
This vulnerability needs immediate patching, especially for internet-facing FortiClientEMS deployments. Defenders should monitor for exploitation attempts targeting CVE-2026-21643 and review Fortinet's advisories for remediation steps. SQL injection remains a common and dangerous attack vector, highlighting the importance of secure coding practices and input validation.