Vulnerability · Published Sep 18, 2026 · Assigned by synology
CVE-2026-40531
Medium 4.3
In plain English
A medium-severity integer overflow in DiskStation Manager (DSM) from Synology. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.4%top 61.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Synology | DiskStation Manager (DSM) | 7.3 – before 7.3.2-86009-27.2.2 – before 7.2.2-72806-77.2.1 – before 7.2.1-69057-10 |
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
References
- Synology-SA-26:06 DSM vendor-advisory