Improper access control in DiskStation Manager (DSM) - CVE-2026-40540
Published: April 16, 2026
Vulnerability identifier: #VU126273
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-40540
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to obtain non-sensitive information.
The vulnerability exists due to improper access control in DiskStation Manager (DSM) when handling requests. A remote user can send crafted requests to obtain non-sensitive information.
Affected software
DiskStation Manager (DSM)
How to mitigate CVE-2026-40540
Install security update from vendor's website.
DiskStation Manager (DSM) - addressed in versions 7.2.1-69057-10, 7.2.2-72806-7, 7.3-81180