ICSA-26-279-01
Vulnerability from csaf_cisa - Published: 2026-10-06 06:00 - Updated: 2026-10-06 06:00Summary
Johnson Controls EasyIO FG
Notes
Legal Notice and Terms of Use: This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Advisory Summary: Successful exploitation of these vulnerabilities could allow an attacker to gain full unauthorized access to the device.
Critical infrastructure sectors: Critical Manufacturing, Commercial Facilities, Government Services and Facilities, Transportation Systems, Energy
Countries/areas deployed: Worldwide
Company headquarters location: Ireland
Recommended Practices: CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities.
Recommended Practices: Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Recommended Practices: Locate control system networks and remote devices behind firewalls and isolating them from business networks.
Recommended Practices: When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
Recommended Practices: CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Recommended Practices: CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices: CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Recommended Practices: Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Recommended Practices: Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
Recommended Practices: CISA also recommends users take the following measures to protect themselves from social engineering attacks:
Recommended Practices: Do not click web links or open attachments in unsolicited email messages.
Recommended Practices: Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Recommended Practices: Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
Recommended Practices: No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities have a high attack complexity. These vulnerabilities are not exploitable remotely.
7.7 (High)
Affected products
Known affected
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Johnson Controls EasyIO FG firmware: <=2.0b52
Johnson Controls / EasyIO FG firmware
|
<=2.0b52 |
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
Mitigation
fix
|
7.7 (High)
Affected products
Known affected
1 product, the same list as for
CVE-2026-27872
References
19 references
{
"document": {
"acknowledgments": [
{
"names": [
"Gabriele Gardois",
"Zachary Bushell",
"Lorenzo De Carli"
],
"organization": "University of Calgary",
"summary": "reported these vulnerabilities to Johnson Controls"
}
],
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"text": "Disclosure is not limited",
"tlp": {
"label": "WHITE",
"url": "https://www.cisa.gov/news-events/news/traffic-light-protocol-tlp-definitions-and-usage"
}
},
"lang": "en-US",
"notes": [
{
"category": "legal_disclaimer",
"text": "This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy \u0026 Use policy (https://www.cisa.gov/privacy-policy).",
"title": "Legal Notice and Terms of Use"
},
{
"category": "summary",
"text": "Successful exploitation of these vulnerabilities could allow an attacker to gain full unauthorized access to the device. ",
"title": "Advisory Summary"
},
{
"category": "other",
"text": "Critical Manufacturing, Commercial Facilities, Government Services and Facilities, Transportation Systems, Energy",
"title": "Critical infrastructure sectors"
},
{
"category": "other",
"text": "Worldwide",
"title": "Countries/areas deployed"
},
{
"category": "other",
"text": "Ireland",
"title": "Company headquarters location"
},
{
"category": "general",
"text": "CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Locate control system networks and remote devices behind firewalls and isolating them from business networks.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA also recommends users take the following measures to protect themselves from social engineering attacks:",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Do not click web links or open attachments in unsolicited email messages.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities have a high attack complexity. These vulnerabilities are not exploitable remotely.",
"title": "Recommended Practices"
}
],
"publisher": {
"category": "coordinator",
"contact_details": "central@cisa.dhs.gov",
"name": "CISA",
"namespace": "https://www.cisa.gov/"
},
"references": [
{
"category": "self",
"summary": "ICS Advisory ICSA-26-279-01 JSON",
"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-279-01.json"
},
{
"category": "self",
"summary": "ICSA Advisory ICSA-26-279-01 - Web Version",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-279-01"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/topics/industrial-control-systems"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/uscert/ncas/tips/ST04-014"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/secure-our-world/teach-employees-avoid-phishing"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/news-events/news/avoiding-social-engineering-and-phishing-attacks"
}
],
"title": "Johnson Controls EasyIO FG",
"tracking": {
"current_release_date": "2026-10-06T06:00:00.000000Z",
"generator": {
"date": "2026-10-05T22:24:36.257125Z",
"engine": {
"name": "CISA CSAF Generator",
"version": "1.0.0"
}
},
"id": "ICSA-26-279-01",
"initial_release_date": "2026-10-06T06:00:00.000000Z",
"revision_history": [
{
"date": "2026-10-06T06:00:00.000000Z",
"legacy_version": "Initial",
"number": "1",
"summary": "Initial Republication of Johnson Controls Product Security Advisory JCI-PSA-2026-12."
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c=2.0b52",
"product": {
"name": "Johnson Controls EasyIO FG firmware: \u003c=2.0b52",
"product_id": "CSAFPID-0001"
}
}
],
"category": "product_name",
"name": "EasyIO FG firmware"
}
],
"category": "vendor",
"name": "Johnson Controls"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-27872",
"cwe": {
"id": "CWE-798",
"name": "Use of Hard-coded Credentials"
},
"notes": [
{
"category": "summary",
"text": "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.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
{
"category": "external",
"summary": "cwe.mitre.org",
"url": "https://cwe.mitre.org/data/definitions/798.html"
},
{
"category": "external",
"summary": "www.cve.org",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-27872"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H"
}
],
"remediations": [
{
"category": "mitigation",
"details": "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 firmware patch or code-level fix will be issued. Users are advised to migrate to supported current-generation products (e.g., EasyIO Neo R1 Series).",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Deploy devices only within isolated BAS/OT networks",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Ensure no direct Internet exposure",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Enforce strict VLAN segmentation from enterprise IT networks",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Restrict access to trusted engineering workstations only",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Block all remote login access from untrusted networks",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Allow connections only from whitelisted IP addresses",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Block all Internet-originated traffic",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Prevent unauthorized lateral movement across networks",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Restrict communication to required protocols only",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Disable insecure services (e.g., Telnet), if enabled",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Disable any unnecessary services or exposed ports",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Monitor for repeated login attempts",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Monitor for unauthorized or root-level access",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Enable logging and centralized monitoring (where supported)",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Restrict distribution of firmware images",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Prevent unauthorized physical and console access",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "For more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2026-12 at the following location: https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.7,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-0001"
]
}
]
},
{
"cve": "CVE-2026-27873",
"cwe": {
"id": "CWE-269",
"name": "Improper Privilege Management"
},
"notes": [
{
"category": "summary",
"text": "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.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
{
"category": "external",
"summary": "cwe.mitre.org",
"url": "https://cwe.mitre.org/data/definitions/269.html"
},
{
"category": "external",
"summary": "www.cve.org",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-27873"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H"
}
],
"remediations": [
{
"category": "mitigation",
"details": "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 firmware patch or code-level fix will be issued. Users are advised to migrate to supported current-generation products (e.g., EasyIO Neo R1 Series).",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Deploy devices only within isolated BAS/OT networks",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Ensure no direct Internet exposure",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Enforce strict VLAN segmentation from enterprise IT networks",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Restrict access to trusted engineering workstations only",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Block all remote login access from untrusted networks",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Allow connections only from whitelisted IP addresses",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Block all Internet-originated traffic",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Prevent unauthorized lateral movement across networks",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Restrict communication to required protocols only",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Disable insecure services (e.g., Telnet), if enabled",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Disable any unnecessary services or exposed ports",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Monitor for repeated login attempts",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Monitor for unauthorized or root-level access",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Enable logging and centralized monitoring (where supported)",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Restrict distribution of firmware images",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "Prevent unauthorized physical and console access",
"product_ids": [
"CSAFPID-0001"
]
},
{
"category": "mitigation",
"details": "For more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2026-12 at the following location: https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.7,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-0001"
]
}
]
}
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…