CVE-2026-73669 Signify CVE debrief

Who should care

Organizations and individuals using Philips Hue Bridge Pro, especially those with IoT devices connected to the bridge, should be aware of this vulnerability. They should verify and apply the provided firmware update to prevent unauthorized access. Additionally, they should restrict network access to the MQTT service and monitor for suspicious activity on the MQTT service. Consider implementing additional security controls for IoT devices connected to the bridge. Security teams and vulnerability management teams should prioritize this update and ensure that affected systems are remediated promptly. This may involve coordinating with IT operations teams to apply the firmware update through normal change control processes. Asset owners and operators should also review compensating controls for exposed systems while remediation is scheduled and verified. Monitoring and detection teams should check relevant logs for exposed assets that need extra review. Exceptions should be tracked, and remediated assets should be retested before closing the item, with evidence documented. Source confidence is limited to the information provided in the CVE record and related sources. The CVE record indicates that Philips Hue Bridge Pro firmware embeds a Mosquitto MQTT broker service that listens on all network interfaces without authentication. An unauthenticated attacker with network access to the MQTT service on a vulnerable system can read data and control connected lights. The issue was fixed in firmware version 1.77.2071318010. The vulnerability has a CVSS score of 6.9 and a severity of MEDIUM. Organizations using Philips Hue Bridge Pro should verify and apply the provided firmware update to prevent unauthorized access. This CVE record was published on 2026-08-13T20:17:30.440Z and has not been modified since then. The CVE Program and NIST NVD provide official records and assessments of this vulnerability. Additional sources may provide further context and details. The debrief and technical summary provide an overview of the vulnerability and its impact. The evidence notes and recommended actions provide further guidance on verifying and mitigating the vulnerability. The CVE-202

Technical summary

The Philips Hue Bridge Pro firmware embeds a Mosquitto MQTT broker service that listens on all network interfaces without authentication. An unauthenticated attacker with network access to the MQTT service on a vulnerable system can read data and control connected lights. The issue was fixed in firmware version 1.77.2071318010. The vulnerability has a CVSS score of 6.9 and a severity of MEDIUM. Organizations using Philips Hue Bridge Pro should verify and apply the provided firmware update to prevent unauthorized access.

Defensive priority

Organizations using Philips Hue Bridge Pro should verify and apply the provided firmware update to prevent unauthorized access.

Recommended defensive actions

• Verify and apply the provided firmware update to Philips Hue Bridge Pro.
• Restrict network access to the MQTT service.
• Monitor for suspicious activity on the MQTT service.
• Consider implementing additional security controls for IoT devices.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record indicates that Philips Hue Bridge Pro firmware embeds a Mosquitto MQTT broker service that listens on all network interfaces without authentication. An unauthenticated attacker with network access to the MQTT service on a vulnerable system can read data and control connected lights. The issue was fixed in firmware version 1.77.2071318010.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.