Connect with us

Hi, what are you looking for?



Flaws Found in Carlo Gavazzi Energy Monitoring Products

Swiss-based industrial and building automation solutions provider Carlo Gavazzi has released firmware updates for some of its energy monitoring products to address potentially serious vulnerabilities that could expose devices to remote cyberattacks.

Swiss-based industrial and building automation solutions provider Carlo Gavazzi has released firmware updates for some of its energy monitoring products to address potentially serious vulnerabilities that could expose devices to remote cyberattacks.

Security researcher Karn Ganeshen discovered that Carlo Gavazzi’s VMU-C EM and VMU-C PV products running firmware versions prior to A11_U05 and A17 are affected by at least three security holes that have been classified as having “critical” and “high” severity.

The VMU-C is designed to record, monitor and transmit signals from energy meters, power analyzers and other VMU modules in an effort to help organizations manage energy efficiency. The device includes a web server that can be used to set up the system and monitor data.

According to an advisory published last week by ICS-CERT, the product has a flaw that allows access to most of the application’s functions without authentication (CVE-2017-5144), and a cross-site request forgery (CSRF) weakness that can be exploited to change configuration parameters (CVE-2017-5145). Ganeshen also discovered that the product stores some sensitive information in clear text (CVE-2017-5146).

SAVE THE DATE: ICS Cyber Security Conference | Singapore – April 25-27, 2017

The researcher told SecurityWeek that the ICS-CERT advisory will likely be updated as it contains some inaccurate information; specifically, Ganeshen has not tested the firmware updates, and the flaws can be exploited remotely.

The expert said it took Carlo Gavazzi just over five months to release patches for its VMU-C products after being informed of the vulnerabilities. He commended the manufacturer for how it handled the situation.

Advertisement. Scroll to continue reading.

Ganeshen plans on disclosing additional details on his blog. In the meantime, he told SecurityWeek that the flaws can be exploited remotely if the device’s administrator interface is accessible from the local network or the Internet.

“If the vulnerable versions are deployed at a power distribution facility anywhere, and the device is accessible over the Interwebs, you can access energy related database(s) stored on the device by sending one request,” the researcher explained.

Carlo Gavazzi is not the only vendor whose energy monitoring products have been found to be vulnerable by Ganeshen. A few months ago, he disclosed a series of flaws affecting power meters from Schneider Electric and FENIKS PRO.

UPDATE. Carlo Gavazzi told SecurityWeek it had released the A11_U05 and A17 firmware updates, which are available for download on the company’s website or via the device’s web interface, in December. However, the firm also released an intermediate firmware package to fix some of the reported flaws in August.

Carlo Gavazzi has pointed out that there is no evidence of any exploits specifically targeting these vulnerabilities.

“IT security is the result of a process. Carlo Gavazzi is committed to the continuous improvement of cyber-security of its systems and in this case the above security fixes are the results of a productive collaboration between Carlo Gavazzi, ICS CERT and their researchers; the VMU-C systems embed a feature that allows a user to easily download and install the latest firmware update. Updates are always available for free to all customers, so Carlo Gavazzi strongly suggests to always keep the VMU-C updated,” Carlo Cavazzi stated.

Related Reading: Smart Meters Pose Security Risks to Consumers, Utilities

Related Reading: Vermont Utility Refutes Reports of Russia Hacking U.S. Electric Grid

Related Reading: IBM Reports Significant Increase in ICS Attacks

Written By

Eduard Kovacs (@EduardKovacs) is a contributing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

SecurityWeek’s Threat Detection and Incident Response Summit brings together security practitioners from around the world to share war stories on breaches, APT attacks and threat intelligence.


Securityweek’s CISO Forum will address issues and challenges that are top of mind for today’s security leaders and what the future looks like as chief defenders of the enterprise.


Expert Insights

Related Content


Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Data Breaches

OpenAI has confirmed a ChatGPT data breach on the same day a security firm reported seeing the use of a component affected by an...

Risk Management

The supply chain threat is directly linked to attack surface management, but the supply chain must be known and understood before it can be...


The latest Chrome update brings patches for eight vulnerabilities, including seven reported by external researchers.


Patch Tuesday: Microsoft warns vulnerability (CVE-2023-23397) could lead to exploitation before an email is viewed in the Preview Pane.


Apple has released updates for macOS, iOS and Safari and they all include a WebKit patch for a zero-day vulnerability tracked as CVE-2023-23529.

IoT Security

A group of seven security researchers have discovered numerous vulnerabilities in vehicles from 16 car makers, including bugs that allowed them to control car...

CISO Strategy

Cybersecurity-related risk is a top concern, so boards need to know they have the proper oversight in place. Even as first-timers, successful CISOs make...