CVE-2026-3562
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Authentication Bypass in Philips Hue Bridge via Ed25519 Signature Flaw

Publication date: 2026-03-16

Last updated on: 2026-04-27

Assigner: Zero Day Initiative

Description
Philips Hue Bridge hk_hap Ed25519 Signature Verification Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Philips Hue Bridge. Authentication is not required to exploit this vulnerability. The specific flaw exists within the ed25519_sign_open function. The issue results from improper verification of a cryptographic signature. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-28480.
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Meta Information
Published
2026-03-16
Last Modified
2026-04-27
Generated
2026-06-16
AI Q&A
2026-03-16
EPSS Evaluated
2026-06-15
NVD
CVE-2026-3562
EUVD
EUVD-2026-12164
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
philips hue_bridge_v2_firmware to 1975170000 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-347 The product does not verify, or incorrectly verifies, the cryptographic signature for data.
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Executive Summary

CVE-2026-3562 is an authentication bypass vulnerability in the Philips Hue Bridge. It exists in the ed25519_sign_open function, which is responsible for verifying Ed25519 cryptographic signatures. Due to improper verification of these signatures, an attacker who is network-adjacent can bypass authentication without needing any privileges or user interaction.

This flaw allows the attacker to execute arbitrary code on affected Philips Hue Bridge devices.

Impact Analysis

This vulnerability can have serious impacts as it allows an attacker to bypass authentication and execute arbitrary code on the Philips Hue Bridge device remotely.

  • Compromise of device confidentiality, integrity, and availability.
  • Potential unauthorized control over the Philips Hue Bridge and connected smart home devices.
  • Possible disruption of smart home operations or misuse of the device for further attacks.
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