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Findings

ZDI-26-558

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

Published Aug 12, 2026

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.

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 InitiativeZDI-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