Freeze the Controller, Defrost the Food: Uncovering Vulnerabilities in Danfoss Refrigeration Controllers
Description
Multiple vulnerabilities were discovered in the Danfoss AK-SM 800A refrigeration controller's embedded web management interface, including a hidden authentication bypass mechanism. These flaws could allow attackers to inject code and disrupt refrigeration operations. The issues were responsibly disclosed to Danfoss and addressed in a firmware update.
Reddit Discussion
Team82 recently analyzed the Danfoss AK-SM 800A refrigeration controller and identified multiple vulnerabilities in its embedded web management interface.
One finding involved a hidden “code-of-the-day” authentication mechanism that could be abused to bypass the controller’s standard authentication controls. Successful exploitation could enable an attacker to inject code and potentially disrupt refrigeration operations.
Team82 disclosed the findings to Danfoss, and the vulnerabilities were addressed in a subsequent firmware release.
Links cited in this discussion
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Team82 analyzed the Danfoss AK-SM 800A refrigeration controller and identified several vulnerabilities in its embedded web management interface. A notable finding was a hidden "code-of-the-day" authentication mechanism that could be exploited to bypass standard authentication controls. Exploiting these vulnerabilities could enable code injection and operational disruption of refrigeration systems. The vulnerabilities were disclosed to Danfoss, which subsequently released a firmware update to remediate the issues.
Potential Impact
Successful exploitation of the vulnerabilities could allow an attacker to bypass authentication and inject code into the refrigeration controller, potentially disrupting refrigeration operations. This could affect the availability and integrity of the refrigeration system controlled by the device.
Mitigation Recommendations
The vulnerabilities have been addressed by Danfoss in a subsequent firmware release. Users of the Danfoss AK-SM 800A refrigeration controller should update to the latest firmware version provided by Danfoss to mitigate these issues.
Technical Details
- Source Type
- Subreddit
- cybersecurity
- Reddit Score
- 0
- Discussion Level
- minimal
- Content Source
- reddit_link_post
- Post Type
- link
- Newsworthiness Assessment
- {"score":27,"reasons":["external_link","established_author","very_recent"],"isNewsworthy":true}
- Has External Source
- true
- Trusted Domain
- false
Threat ID: 6a986ccfacd9273b4997d77e
Added to database: 09/02/2026, 18:37:03 UTC
Last enriched: 09/07/2026, 20:58:21 UTC
Last updated: 10/04/2026, 05:45:02 UTC
Views: 126
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