CVE-2026-21662

Published Jul 31, 2026 Modified Jul 31, 2026 CWE-434

Description

Unrestricted upload of file with dangerous type vulnerability in Johnson Controls FM Systems Employee allows Using Malicious Files. This issue affects FM Systems Employee: before 2025.3.1.

Is your site exposed to CVE-2026-21662?

Run a free security scan — no signup, results in seconds.

Weakness Type (CWE)

CWE-434 Unrestricted Upload

References

Frequently Asked Questions

What is CVE-2026-21662? +
Unrestricted upload of file with dangerous type vulnerability in Johnson Controls FM Systems Employee allows Using Malicious Files. This issue affects FM Systems Employee: before 2025.3.1.
How do I check if I'm vulnerable to CVE-2026-21662? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

Don't wait for an exploit

Scan your website for vulnerabilities like CVE-2026-21662 — free, no signup required.