CVE-2026-3562

Philips Hue Bridge hk_hap Ed25519 Signature Verification Authentication Bypass Vulnerability

HIGH
8.8
CVSS Score
Published: March 13, 2026 at 08:37 PM UTC
Updated: June 17, 2026 at 10:43 AM UTC
2 products affected across 1 vendorHue Bridge V2 FirmwareHue Bridge

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Severity
HIGH8.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1975170000
philips-hue-bridge-v2 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_research-advisoryThird Party Advisory
Source: cverecord
https://www.zerodayinitiative.com/advisories/ZDI-26-160/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-347

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