CVE-2026-3562 Philips Hue Bridge hk_hap Ed25519 Signature Verification Authentication Bypass Vulnerability
Network-adjacent attackers can bypass authentication and execute arbitrary code on Philips Hue Bridge devices due to improper Ed25519 signature verification.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3562?
CVE-2026-3562 is a medium-severity authentication bypass vulnerability in Philips Hue Bridge, published on 13 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-347
Which versions are affected by CVE-2026-3562?
It affects 1 product.
Products include Philips Hue Bridge V2 Firmware.
How do I fix CVE-2026-3562?
No fix has been published for CVE-2026-3562 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-3562 being exploited?
There is no known exploitation of CVE-2026-3562 in the wild and no public exploit code.
Other vulnerabilities in Philips Hue Bridge
- CVE-2026-3556 Philips Hue Bridge HomeKit Pair-Setup Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2026-3560 Philips Hue Bridge HomeKit hk_hap_pair_storage_put Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2026-3558 Philips Hue Bridge HomeKit Accessory Protocol Transient Pairing Mode Authentication Bypass Vulnerability
- CVE-2026-3559 Philips Hue Bridge HomeKit Accessory Protocol Static Nonce Authentication Bypass Vulnerability
- CVE-2026-3555 Philips Hue Bridge Zigbee Stack Custom Command Handler Heap-based Buffer Overflow Remote Code Execution Vulnerability
Sources
Also known as GHSA-6wwq-69q4-fc36.