Heap-based buffer overflow in Hue Bridge V2 - CVE-2026-3555
Published: March 9, 2026
Vulnerability identifier: #VU123631
CSH Severity: Medium
CVSS v4: 8.5 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-3555
CWE-ID: CWE-122
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the handling of custom Zigbee ZCL frames in the Model Info download functionality. A remote attacker on the local network can wait for user to initiate the device pairing process, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Hue Bridge V2
How to mitigate CVE-2026-3555
Install updates from vendor's website.
Hue Bridge V2 - update to 1975170000