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Field Note · May 20, 2026 · runbook-desk

FortiClient EMS CVE-2023-48788: a SQL injection that talks the database into running SYSTEM commands

When a product runs on Microsoft SQL Server, a SQL injection is rarely just a data leak. The attacker turns on xp_cmdshell from inside the injection and gets OS command execution. On FortiClient EMS that's unauthenticated, as SYSTEM. Here's how to check, patch, and detect it.