Heap-based buffer overflow in Hue Bridge V2 - CVE-2026-3557
Published: March 9, 2026
Vulnerability identifier: #VU123633
CSH Severity: Medium
CVSS v4: 8.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-3557
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 hap_pair_verify_handler function of the hk_hap service. A remote user on the local network can pass specially crafted data to the application, 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-2026-3557
Install updates from vendor's website.
Hue Bridge V2 - update to 1975170000