ZDI-26-558: (Pwn2Own) Amazon Smart Plug OTA Update Process Improper Certificate Validation Vulnerability

Code

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No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Aug 12, 2026 · Catalog

   Detected

   This vulnerability allows network-adjacent attackers to bypass certificate validation for OTA updates on affected installations of Amazon Smart Plug. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 6.8.

Sources

• Zero Day InitiativeCoordinated disclosureZDI-26-558

  This vulnerability allows network-adjacent attackers to bypass certificate validation for OTA updates on affected installations of Amazon Smart Plug. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 6.8.

  zerodayinitiative.com