by Kastro
Paper/Archive/CVE-2026-21662

CVE-2026-21662

Johnson Controls FM Systems Employee — FMS Employee Allows Upload of Unrestricted Files

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
38
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 43.0.430 × 208.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
FM Systems Employee< 2025.3.12025.3.1CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
jci (CNA)4.8CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refjohnsoncontrols.com/trust-center/cybersecurity/security-advisories