BGC Risk Score
Blue Goat Cyber MedTech rubric v1.0 · methodology
4.0 base 5.3 · CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Delay of care
No public exploit observed
8/10 network-reachable signals
How we got to 5.0
- 1
CVSS technical severity (40%)
Industry-standard exploitability + impact score. We prefer CVSS 4.0 and fall back to 3.1 per the FDA's Feb 2026 premarket cybersecurity guidance. Missing CVSS scores get a neutral 4.0 so unknown vulns are not over- or under-rated.
4.0 base 5.3 × 40% = +2.12 - 2
Patient safety impact (35%)
What happens to a patient if this vuln is exploited on a connected device. Auto-inferred from headline, dek, tags, and device class against a curated MedTech keyword library (pacemaker, infusion pump, EHR, PACS, etc.).
Delay of care → 5 × 35% = +1.75 - 3
Exploit maturity (15%)
Is anyone actually using this in attacks? KEV listing > weaponized exploit > public PoC > none. KEV alone forces tier=critical regardless of CVSS.
No public exploit observed → 2 × 15% = +0.30 - 4
MedTech exposure (10%)
How likely this affects clinical operations: presence in our MedTech feed (+4 baseline), network-reachable signals (+3), known device-class tags (+2), identified MedTech vendor (+1).
Exposure 8/10 × 10% = +0.80
Tier cutoffs: Critical ≥ 8.5 · High 7.0–8.4 · Notable 4.0–6.9 · Info < 4.0. Full methodology, weights, and changelog at /goatfeed/risk-rubric.
Vendor match: Philips
CVSS 4.0: 5.3 (MEDIUM) - `CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X`
BGC-RS: 5.0 (notable) · CVSS 4.0 base 5.3 · patient-safety: delay-of-care · exploit: none · MedTech exposure 8/10 · methodology
Description
The Signify Philips Hue Bridge Pro firmware embeds a Mosquitto MQTT broker (v2.0.22) that listens on all network interfaces with anonymous access enabled and no firewall restriction. An attacker with access to the Bridge's network can read device data and control connected lights.