What is CVE-2026-3556?

CVE-2026-3556 is a high-severity vulnerability in Philips Hue Bridge, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-03-13.

How severe is CVE-2026-3556?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Philips Hue Bridge

CVE-2026-3556

Philips Hue Bridge HomeKit Pair-Setup 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. Authentic…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (31.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Philips Hue Bridge — versions 1.73.1973146020

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

ZDI-26-154 (x_research-advisory)

Frequently asked questions

What is CVE-2026-3556?: CVE-2026-3556 is a high-severity vulnerability in Philips Hue Bridge, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-03-13.
How severe is CVE-2026-3556?: High severity. CVSS v3 base score is 8.8 out of 10.