Advisory Details

March 6th, 2026

(Pwn2Own) Philips Hue Bridge Zigbee Stack Custom Command Handler Heap-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2026-3555
CVSS SCORE	8.0, AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Philips
AFFECTED PRODUCTS	Hue Bridge
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. User interaction is required to exploit this vulnerability in that the user must initiate the device pairing process. The specific flaw exists within the handling of custom Zigbee ZCL frames in the Model Info download functionality. The issue results from the lack of proper validation of the size of data prior to copying it to a fixed-size heap buffer. An attacker can leverage this vulnerability to execute code in the context of the device.
ADDITIONAL DETAILS	Fixed in Bridge v2 Software version 1975170000 https://www.philips-hue.com/en-ca/support/release-notes/bridge
DISCLOSURE TIMELINE	2025-11-18 - Vulnerability reported to vendor 2026-03-06 - Coordinated public release of advisory 2026-03-06 - Advisory Updated
CREDIT	Mehdi Talbi, Matthieu Breuil, Théo Gordyjan from @Synacktiv

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