Advisory Details

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Samsung SmartThings. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the Hub Local API service, which listens on TCP port 8766 by default. The issue results from the lack of proper verification of a cryptographic signature. An attacker can leverage this vulnerability to bypass authentication on the system.

10/31/24 – ZDI reported the vulnerability to the vendor.

11/01/24 – The vendor acknowledged the report.

1/31/25 – The vendor states the case has been assessed as low priority.

02/14/25 – ZDI informed the vendor of the Pwn2Own Disclosure period, and that we will publish the case as a zero-day advisory should there not be a patch available.

-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the application

• 2024-10-31 - Vulnerability reported to vendor
• 2025-03-11 - Coordinated public release of advisory
• 2025-03-11 - Advisory Updated