Advisory Details

December 3rd, 2025

(Pwn2Own) Synology DiskStation DS925+ samlAuth Authentication Bypass Vulnerability

CVE ID	CVE-2025-13392
CVSS SCORE	6.3, AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
AFFECTED VENDORS	Synology
AFFECTED PRODUCTS	DiskStation DS925+
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)

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