Slashdot has reported:

Hackers remotely altered refrigeration systems at hundreds of French supermarkets, reportedly raising temperatures in some fridges and freezers to 50C (122F). The overheating spoiled food and sparked fires. Prime Minister Sebastien Lecornu ordered a cybersecurity investigation, and similar incidents were reported in Spain, Portugal, Poland, Germany and Belgium.

Carrefour said 80 of its stores in France were affected, while Monoprix reported that 5% of its locations were hit. Les Mousquetaires said refrigerators at about 150 Intermarche stores were heated to 50C for six hours.

Supermarket cold aisles commonly rely on control panels that manage a store’s fridges and freezers. Those systems can be accessed over the internet, allowing maintenance companies to adjust equipment remotely. A source close to Lecornu said France’s cybersecurity agency, ANSSI, had identified a vulnerability in software supplied by Danish company Danfoss.

Danfoss said it was “aware of incidents in France affecting a limited number of refrigeration management systems.” The company said the affected units “were running outdated firmware,” and added that it had “long advised customers to keep supported systems updated with the latest firmware and to migrate legacy systems to current-generation solutions.”

On August 9, cybersecurity firm Claroty’s Team82 published research on vulnerabilities in the Danfoss AK-SM 800A controller. The report said updates issued by Danfoss addressed flaws that could have let attackers bypass authentication controls and execute code on compromised devices.