CVE-2026-3559
HIGHDescription
Philips 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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 32% of all known CVEs.
References
Related Vulnerabilities
Other CWE-323 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2017-13082 | High | 8.1 | 4.6% | - | Fix |
| CVE-2026-49952 | Critical | 9.1 | 4.2% | - | - |
| CVE-2017-7902 | Critical | 9.8 | 2.6% | - | - |
| CVE-2017-13080 | Medium | 5.3 | 2.3% | - | Fix |
| CVE-2017-13084 | Medium | 6.8 | 2.2% | - | - |
| CVE-2017-13079 | Medium | 5.3 | 2.1% | - | Fix |
Common questions
How do I fix CVE-2026-3559?
Upgrade hue bridge v2 firmware to 1975170000 or later.
Is CVE-2026-3559 being actively exploited?
Not that we know of. CVE-2026-3559 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.40% is the estimated probability that it will be exploited in the next 30 days. That is higher than 32% of all scored CVEs.
How severe is CVE-2026-3559?
CVE-2026-3559 has a CVSS v3 base score of 8.1, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2026-3559 affect?
Published advisories record a fix for hue bridge v2 firmware (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-27.