Dangerous flaws in refrigeration equipment were disclosed months before retail attacks
Incidents: Exploited flaws in Danfoss refrigeration controllers led to widespread temperature manipulation and food spoilage in French supermarkets.
Deep Analysis and Expert Commentary
The attack path involved exploiting CVE-2025-41451 and CVE-2025-41452 in Danfoss AK-SM 800A controllers, which were internet-exposed despite assumptions of network isolation. Attackers manipulated refrigeration systems to raise temperatures to 120°F, causing fires and spoilage. The scope extended to hundreds of stores, including major chains like Carrefour and Intermarché, via a compromised service provider. Mitigations include immediate patching, network segmentation, and VPN protection for ICS devices. The incident underscores the critical need for lifecycle management of OT systems, as many targeted devices were end-of-life and unsupported.
Action Items
- Patch vulnerable Danfoss controllers immediately and verify firmware updates.
- Segment industrial control systems from the internet and restrict access via VPN.
- Conduct audits to identify and retire end-of-life OT devices lacking security updates.
Original Article Brief Intro
Cybersecurity Dive · 2026-10-13 · Incidents: Exploited flaws in Danfoss refrigeration controllers led to widespread temperature manipulation and food spoilage in French supermarkets.
Related Terms and Notes
CVE IDs
- CVE-2025-41451 — A high-severity vulnerability in Danfoss AK-SM 800A controllers allowing unauthorized temperature manipulation.
- CVE-2025-41452 — A flaw in Danfoss controllers enabling false temperature readings to staff while cooling is disabled.
Malware Families
- Refrigeration Controllers
Techniques / TTPs
- Food Supply Chain
Context Notes
- Danfoss
- Food Safety
- ICS
- Industrial Control Systems
- OT Security