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CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

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.

CVSS 4.8 · MediumBuzz score 21.0

Buzz score

Why this CVE is surfacing

Buzz score total 21.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 11.0 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
11.0
2 evidence mentions in the snapshot
Diversity score
10.0
2 sources across 2 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
2
within the 30d window
Peak daily
1
highest bucket

Evidence

Source links by recency

Newest mentions first
2 source links · newest first
  • https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisorieswww.johnsoncontrols.com

    No excerpt available.

    Vendor Advisorywww.johnsoncontrols.comJul 31, 2026, 6:17 PM
  • Johnson Controls OpenBlue EmployeeCISA Alerts

    he following versions of Johnson Controls OpenBlue Employee are affected: OpenBlue Employee (FMS Employee) <=V2025.3.1 (CVE-2026-21662, CVE-2026-34495, CVE-2026-34497) CVSS Vendor Equipment Vulnerabilities v3 2.4 Johnson Controls Inc. Johnson Controls OpenBlue Employee Unrestricted Upload of File with Dangerous Type, Improper Neutralization of Input Du

    governmentwww.cisa.govJul 30, 2026, 12:00 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

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