Vulnerability · Published Sep 18, 2026 · Assigned by synology
CVE-2026-40535
Medium 6.5
In plain English
A medium-severity path traversal 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 0.5% (higher than 43% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 56.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Desktop API in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote attackers to write limited files and 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-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
References
- Synology-SA-26:06 DSM vendor-advisory