CVE-2026-3561 Philips Hue Bridge hk_hap characteristics Heap-based Buffer Overflow Remote Code Execution Vulnerability

High 8.0 Published 13 Mar 2026 Updated 16 Mar 2026

Network-adjacent attackers can execute arbitrary code on Philips Hue Bridge devices via a heap-based buffer overflow in the characteristics endpoint.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-3561?

CVE-2026-3561 is a high-severity memory corruption vulnerability in Philips Hue Bridge, published on 13 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Philips Hue Bridge hk_hap characteristics 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. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the handling of PUT requests to the characteristics endpoint. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-28479.

Weakness: CWE-122

Which versions are affected by CVE-2026-3561?

It affects 1 product.

Products include Philips Hue Bridge V2 Firmware.

How do I fix CVE-2026-3561?

No fix has been published for CVE-2026-3561 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-3561 being exploited?

There is no known exploitation of CVE-2026-3561 in the wild and no public exploit code.

Sources

Also known as GHSA-83wp-894h-3qf5.