Is CVE-2026-3555 actively exploited?

No active exploitation of CVE-2026-3555 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3555 be exploited remotely?

Partially. CVE-2026-3555 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2026-3555?

CVE-2026-3555 has a CVSS score of 8.0 (HIGH).

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HIGH

CVE-2026-3555

CWE-122Published: March 16, 2026· Updated: Mar 16, 2026

8.0

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:15.9th

Official Description

Philips Hue Bridge Zigbee Stack Custom Command Handler 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. 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. Was ZDI-CAN-28276.

NVD Source

Technical Analysis

CVE-2026-3555 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.0.