Medium severity · published Oct 1, 2026
CVE-2026-27873
- Use of Hard-coded Credentials vulnerability in Johnson Controls EasyIO FG allows - Pasword Spraying
5.6
CVSS
0.1%
EPSS
No
On KEV
Description
- Use of Hard-coded Credentials vulnerability in Johnson Controls EasyIO FG allows - Pasword Spraying.
This issue affects EasyIO FG: before 2.0b52.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 0% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EF
EasyIO FG · Johnson Controls
before 2.0b52 · source: vendor
In the news
ThreatIntelHigh
Johnson Controls EasyIO FG
View CSAF
Summary
Successful exploitation of these vulnerabilities could allow an attacker to gain full unauthorized access to the device.
The following versions of Johnson Controls EasyIO FG are affected:
EasyIO FG firmware <=2.0b52 (CVE-2026-27872, CVE-2026-27873)
CVSS
Vendor
Equipment
v3 7.7
Johnson Controls
EasyIO FG firmware
2 Vulnerabilities
Use of Hard-coded Credentials, Improper Privilege Management
Background
Critical Infrastructure Sectors: Critical Manufacturing, Commercial Facilities, Government Services and Facilities, Transportation Systems, Energy
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Ireland
Vulnerabilities
Expand All +
CVE-2026-27872
A vulnerability exists in EasyIO FG relating to an attacker gaining unauthorized access to the system through hard-coded credentials and improper privilege management, potentially resulting in full device compromise. Successful exploitation could result in technical or operational impact.
Read More
1 Affected Product
Johnson Controls EasyIO FG firmware: <=2.0b52
Product Status: known_affected
Remediations
Mitigation Johnson Controls has determined that the EasyIO FG Series has reached End-of-Life (EOL) and End-of-Support (EOS) status. The product has not been manufactured or sold since prior to 2019, and the source code is no longer available. As a result, no firm...
Oct 6, 2026·CISA Advisories
