ESC 8832 SCADA System Vulnerabilities

Number: AL16-011
Date: 31 May 2016


The purpose of this advisory is to bring attention to vulnerabilities in the Environmental Systems Corporation (ESC) 8832 Data Controller.


CCIRC is aware of critical vulnerabilities in the Environmental Systems Corporation (ESC) 8832 Data Controller unit.  These vulnerabilities are remotely exploitable and can allow an attacker to gain administrator level control of the device.

ESC has stated that firmware security updates will not be issued due to hardware limitations in the 8832 Data Controller.   This is despite the official 1 January 2019 end of life for the 8832 Data Controller.  As a result, the vulnerabilities will not be resolved.

CVE References: CVE-2016-4501, CVE-2016-4502

Affected Versions:
- ESC 8832 Data Controller Version 3.02 and earlier

Suggested action

CCIRC recommends that system owners enact their organization’s life-cycle process for affected devices, and test/deploy replacement solutions.  To aid with mitigation of the vulnerabilities, network access to affected devices should be controlled, isolated and protected.  In particular, access to port 80 on affected devices should be restricted.


ICS-CERT Advisory -
ESC Model Description -
ESC  Presentation -

Note to Readers

In support of Public Safety's mission to build a safe and resilient Canada, CCIRC's mandate is to help ensure the security and resilience of the vital non-federal government cyber systems that underpin Canada's national security, public safety and economic prosperity. As Canada's computer security incident response team, CCIRC is Canada's national coordination centre for the prevention and mitigation of, preparedness for, response to, and recovery from cyber incidents on non-federal government systems. It does this by providing authoritative advice and support, and coordinating information sharing and incident response.

Please note, CCIRC PGP key has recently been updated.

For general information, please contact Public Safety Canada's Public Affairs division at:

Telephone: 613-944-4875 or 1-800-830-3118
Fax: 613-998-9589

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