CVE-2026-3556: (Pwn2Own) Philips Hue Bridge HomeKit Pair-Setup Heap-based Buffer Overflow Remote Code Execution Vulnerability
Philips Hue Bridge HomeKit Pair-Setup Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the hkhappairstorageput function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the HomeKit service. Was ZDI-CAN-28326.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-3556?
CVE-2026-3556 has been classified as a high-severity vulnerability due to the potential for remote code execution.
How do I fix CVE-2026-3556?
To mitigate CVE-2026-3556, update the Philips Hue Bridge to the latest firmware version provided by Philips.
What types of attacks can exploit CVE-2026-3556?
CVE-2026-3556 can be exploited by network-adjacent attackers to execute arbitrary code on the Philips Hue Bridge.
Which devices are affected by CVE-2026-3556?
CVE-2026-3556 affects the Philips Hue Bridge, specifically those implementing the HomeKit Pair-Setup feature.
Is my Philips Hue Bridge at risk from CVE-2026-3556?
If you are using an older firmware version of the Philips Hue Bridge, your device may be at risk from CVE-2026-3556.