(Pwn2Own) QNAP QHora-322 login.newAuthMiddleware.Authenticator Authentication Bypass Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to bypass authentication on affected installations of QNAP QHora-322 routers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the qurouter_token parameter provided to the login.newAuthMiddleware.Authenticator endpoint. The issue results from allowing a user to authenticate using an arbitrary QCloud account. An attacker can leverage this in conjunction with other vulnerabilities to bypass authentication on the system.
Additional Details
QNAP has issued an update to correct this vulnerability. More details can be found at:
https://www.qnap.com/en/security-advisory/qsa-26-12
Disclosure Timeline
- 2025-11-18 - Vulnerability reported to vendor
- 2026-03-30 - Coordinated public release of advisory
- 2026-03-30 - Advisory Updated
Credit
Bongeun Koo (@kiddo_pwn) and Evangelos Daravigkas (@freddo_1337) of Team DDOS
