CVE-2026-3558: CWE-306: Missing Authentication for Critical Function in Philips Hue Bridge
CVE-2026-3558 is a high-severity vulnerability in the Philips Hue Bridge version 1.73.1973146020 that allows network-adjacent attackers to bypass authentication. The flaw exists in the HomeKit Accessory Protocol service, which listens on TCP port 8080 and does not require authentication before granting access to critical functions. This missing authentication can be exploited without user interaction and can lead to unauthorized control of the device. No patch or official fix information is currently provided. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
The Philips Hue Bridge version 1.73.1973146020 contains a vulnerability (CVE-2026-3558) classified as CWE-306 (Missing Authentication for Critical Function). The HomeKit Accessory Protocol service on TCP port 8080 does not enforce authentication, allowing network-adjacent attackers to bypass authentication controls and access critical functions. This vulnerability has a CVSS 3.0 base score of 8.1, indicating high impact on confidentiality and integrity without affecting availability. The vulnerability was assigned and published by ZDI as ZDI-CAN-28374. No patch or remediation details are currently available from the vendor.
Potential Impact
Successful exploitation allows an attacker on the same network segment to bypass authentication on the Philips Hue Bridge, potentially gaining unauthorized access to critical device functions. The confidentiality and integrity of the device and its data may be compromised. Availability is not impacted according to the CVSS vector. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to the Philips Hue Bridge, especially limiting access to TCP port 8080 to trusted devices only. Monitor vendor communications for updates on patches or official mitigations.
CVE-2026-3558: CWE-306: Missing Authentication for Critical Function in Philips Hue Bridge
Description
CVE-2026-3558 is a high-severity vulnerability in the Philips Hue Bridge version 1.73.1973146020 that allows network-adjacent attackers to bypass authentication. The flaw exists in the HomeKit Accessory Protocol service, which listens on TCP port 8080 and does not require authentication before granting access to critical functions. This missing authentication can be exploited without user interaction and can lead to unauthorized control of the device. No patch or official fix information is currently provided. There are no known exploits in the wild at this time.
CVSS v3.0
Score 8.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Philips Hue Bridge version 1.73.1973146020 contains a vulnerability (CVE-2026-3558) classified as CWE-306 (Missing Authentication for Critical Function). The HomeKit Accessory Protocol service on TCP port 8080 does not enforce authentication, allowing network-adjacent attackers to bypass authentication controls and access critical functions. This vulnerability has a CVSS 3.0 base score of 8.1, indicating high impact on confidentiality and integrity without affecting availability. The vulnerability was assigned and published by ZDI as ZDI-CAN-28374. No patch or remediation details are currently available from the vendor.
Potential Impact
Successful exploitation allows an attacker on the same network segment to bypass authentication on the Philips Hue Bridge, potentially gaining unauthorized access to critical device functions. The confidentiality and integrity of the device and its data may be compromised. Availability is not impacted according to the CVSS vector. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to the Philips Hue Bridge, especially limiting access to TCP port 8080 to trusted devices only. Monitor vendor communications for updates on patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- zdi
- Date Reserved
- 2026-03-04T19:42:42.383Z
- Cvss Version
- 3.0
- State
- PUBLISHED
Threat ID: 69b47ac82f860ef943b21735
Added to database: 3/13/2026, 8:59:52 PM
Last enriched: 5/26/2026, 8:24:17 PM
Last updated: 6/12/2026, 1:21:46 PM
Views: 212
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