Vulnerability · Published Mar 13, 2026 · Assigned by zdi

CVE-2026-3562Philips Hue Bridge hk_hap Ed25519 Signature Verification Authentication Bypass Vulnerability

Medium 6.3

In plain English

A medium-severity security flaw in Hue Bridge from Philips. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).

Severity (CVSS 3.0)6.3Medium

Exploit odds (30 days)0.3%top 78.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 products (as reported)

Vendor	Product	Versions
Philips	Hue Bridge	1.73.1973146020

Weakness: CWE-347 · Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References

ZDI-26-160 x_research-advisory