PT-2026-66828 · Johnson Controls · Fm Systems Employee

CVE-2026-21662 · Published 2026-07-31 · Updated 2026-07-31

Mitre

CVSS v4.0

4.8

Medium

Base vector

AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

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.

Fix

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2026-21662

Affected Products

Fm Systems Employee

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-21662 · Security Note
• https://johnsoncontrols.com/trust-center/cybersecurity/security-advisories · Note