(Pwn2Own) Synology DiskStation DS925+ samlAuth Authentication Bypass Vulnerability
Vulnerability Details
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Synology DiskStation DS925+ devices. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the SYNOPAMSSO::samlAuth method. The issue results from permitting authentication via a mechanism that should be disabled. An attacker can leverage this vulnerability to bypass authentication on the system.
Additional Details
Synology has issued an update to correct this vulnerability. More details can be found at:
https://www.synology.com/en-us/security/advisory/Synology_SA_25_14
Disclosure Timeline
- 2025-11-18 - Vulnerability reported to vendor
- 2025-12-03 - Coordinated public release of advisory
- 2025-12-03 - Advisory Updated
Credit
Le Trong Phuc (chanze@VRC) and Cao Ngoc Quy (Chino Kafuu)
