CVE-2026-21662

Severity CVSS v4.0:

MEDIUM

Type:

CWE-434 Unrestricted Upload of File with Dangerous Type

Publication date:

31/07/2026

Last modified:

31/07/2026

Description

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

Impact

Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS v4.0 Severity and Metrics:

Base Score: 4.80 MEDIUM
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): High
User Interaction (UI): Passsive
Confidentiality (VC): Low
Integrity (VI): Low
Availability (VA): None
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0

4.80

Severity 4.0

MEDIUM

References to Advisories, Solutions, and Tools

https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories