Fortinet FortiClient EMS SQL Injection Vulnerability

Fortinet FortiClient EMS

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. Added to CISA KEV on 2026-04-13 (federal deadline 2026-04-16).

First seen: 13 Apr 2026
Last update: 13 Apr 2026, 12:00 UTC
Identifiers: CVE-2026-21643
Source: CISA KEV
On the menu as: VPN & firewalls

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Fortinet FortiClient EMS SQL Injection Vulnerability
Severity: high, exploited in the wild. Patch status: patched.
Affected: Fortinet FortiClient EMS
Ids: CVE-2026-21643

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. Added to CISA KEV on 2026-04-13 (federal deadline 2026-04-16).

## Steps
1. This touches infrastructure (vpn-edge). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-21643") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://fortiguard.fortinet.com/psirt/FG-IR-25-1142 https://nvd.nist.gov/vuln/detail/CVE-2026-21643
https://pwned.coffee/i/fortinet-forticlient-ems-sql-injection-vulnerability-cve-2026-21643

Sources

Totalone hot coffee