Integer overflow in Synology Diskstation Manager (Dsm)
CVE-2026-40531
An integer overflow or wraparound vulnerability in File Operation in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote authenticated users to conduct limited denial-of-service attacks.
Vulnerability class: Integer Overflow
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
Affected products
Weakness classification (CWE)
References
- security@synology.com (vendor-advisory)
Frequently asked questions
- What is CVE-2026-40531?
- CVE-2026-40531 is a medium-severity vulnerability in Synology Diskstation Manager (Dsm), classified under Integer Overflow or Wraparound. CVSS score: 4.3/10. Published 2026-09-18.
- How severe is CVE-2026-40531?
- Medium severity. CVSS v3 base score is 4.3 out of 10.