CVE-2026-3559
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedPhilips Hue Bridge HomeKit Accessory Protocol Static Nonce Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Philips Hue Bridge. Authentication is not required to exploit this vulnerability. The specific flaw exists within the configuration of the SRP authentication mechanism in the HomeKit Accessory Protocol service, which listens on TCP port 8080 by default. The issue results from the use of a static nonce value. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-28451.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThe vulnerability exists in the SRP (Secure Remote Password) authentication mechanism within the HomeKit Accessory Protocol service on Philips Hue Bridge listening on TCP port 8080. The flaw stems from the use of a static nonce value instead of a dynamically generated one, allowing network-adjacent attackers to bypass authentication by replaying the predictable nonce.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 1975170000CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the device modelAccess the Hue Bridge web interface or check the device label to confirm it is a Philips Hue Bridge V2 model.Affected if The device is not a Hue Bridge V2 (other models are not affected by this specific CVE).
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Check the firmware versionLog into the Hue Bridge web interface and navigate to Settings > Software update, or use the Hue API endpoint http://<bridge-ip>/api/<username>/config to retrieve the 'modelid' and 'swversion' fields. Compare the version number to 1975170000.Affected if The firmware version is less than 1975170000 (the device is running a vulnerable version).
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Verify HAP service availability on port 8080From a network-adjacent system, run 'nc -zv <bridge-ip> 8080' or 'nmap -p 8080 <bridge-ip>' to check if TCP port 8080 is open and accepting connections.Affected if Port 8080 is open and reachable from an untrusted network segment (the HAP service must be exposed for the vulnerability to be exploitable).
The environment is affected if you have a Philips Hue Bridge V2 running firmware version lower than 1975170000 with TCP port 8080 accessible from your network.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor data1975170000
Restrict network access to port 8080 using firewall rules or network segmentation to limit exposure to trusted devices only. Apply vendor-supplied firmware patches when available.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-3559 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
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- Version or environment caveats, and links to real fixes
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