Integer overflow in DiskStation Manager (DSM) - CVE-2026-40531
Published: April 16, 2026
Vulnerability identifier: #VU126264
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-40531
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to integer overflow in DSM when processing crafted input. A remote user can send a specially crafted request to cause a denial of service.
Affected software
DiskStation Manager (DSM)
How to mitigate CVE-2026-40531
Install security update from vendor's website.
DiskStation Manager (DSM) - addressed in versions 7.2.1-69057-10, 7.2.2-72806-7, 7.3.2-86009-2