CVE-2026-21662
9.8 · CRITICALOverview
CVE-2026-21662 is a critical-severity vulnerability affecting johnsoncontrols fms_employee. It was published on July 31, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from johnsoncontrols. Update fms_employee to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| johnsoncontrols | fms_employee | 0 | Affected |
Frequently Asked Questions
What is CVE-2026-21662?
CVE-2026-21662 is a critical-severity vulnerability affecting johnsoncontrols fms_employee. It was published on July 31, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2026-21662?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-21662?
Check the references section for vendor advisories and patches from johnsoncontrols. Update fms_employee to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-21662?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-21662 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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AI agents map your attack surface to find vulnerabilities like this one.
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