CVE-2026-21662
Last modified
CVE-2026-21662 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Johnsoncontrols | Fms Employee | <= 2025.3.1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-21662?
How severe is CVE-2026-21662?
How do I fix CVE-2026-21662?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-21657Improper Control of Generation of Code ('Code Injection') vu…9.8
- CVE-2026-21658Unauthenticated Remote Code Execution i.e Improper Control o…9.8
- CVE-2026-21659Unauthenticated Remote Code Execution and Information Disclo…9.8
- CVE-2026-2166A security vulnerability has been detected in code-projects …9.8
- CVE-2026-21660Hardcoded Email Credentials Saved as Plaintext in Firmware (…9.8
- CVE-2026-21661Uncontrolled Search Path Element vulnerability in JohnsonCon…8.4
- CVE-2026-21663HackerOne community member Patrick Lang (7yr) has reported a…6.1
- CVE-2026-21664HackerOne community member Huynh Pham Thanh Luc (nigh7c0r3) …6.1
- CVE-2026-21665The Print Service component of Fiserv Originate Loans Periph…7.7
- CVE-2026-21666A vulnerability allowing an authenticated domain user to per…8.8
- CVE-2026-21667A vulnerability allowing an authenticated domain user to per…8.8
- CVE-2026-21668A vulnerability allowing an authenticated domain user to byp…6.5
Are you affected by CVE-2026-21662?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST