ZDI-CAN-28451: ZDI-26-157: (Pwn2Own) Philips Hue Bridge HomeKit Accessory Protocol Static Nonce Authentication Bypass Vulnerability
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Philips Hue Bridge. Authentication is not required to exploit this vulnerability. The specific flaw exists within the configuration of the SRP authentication mechanism in the HomeKit Accessory Protocol service, which listens on TCP port 8080 by default. The issue results from the use of a static nonce value. An attacker can leverage this vulnerability to bypass authentication on the system.
Other sources
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Philips Hue Bridge. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.1. The following CVEs are assigned: CVE-2026-3559.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-28451?
ZDI-CAN-28451 has a high severity level due to its potential for allowing unauthorized access on the Philips Hue Bridge.
How do I fix ZDI-CAN-28451?
To fix ZDI-CAN-28451, upgrade to the latest firmware version for the Philips Hue Bridge that addresses this vulnerability.
Who is affected by ZDI-CAN-28451?
Users of the Philips Hue Bridge are affected by ZDI-CAN-28451 due to the authentication bypass vulnerability.
What type of attack is described in ZDI-CAN-28451?
ZDI-CAN-28451 describes an authentication bypass attack that can be exploited by network-adjacent attackers.
Are there any workarounds for ZDI-CAN-28451?
Currently, there are no known workarounds for ZDI-CAN-28451 other than applying the recommended firmware updates.