CVE-2026-40535: Path Traversal
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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Synology DiskStation Manager (DSM) Desktop APIto a version that resolves this vulnerability.Fixed in 7.2.1-69057-10 - Upgrade
Upgrade
Synology DiskStation Manager (DSM) Desktop APIto a version that resolves this vulnerability.Fixed in 7.2.2-72806-7 - Upgrade
Upgrade
Synology DiskStation Manager (DSM) Desktop APIto a version that resolves this vulnerability.Fixed in 7.3.2-86009-2
Event History
Frequently Asked Questions
Which DSM releases are affected?
DSM releases before 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2 are affected.
Does exploitation require authentication or user interaction?
No. The listed vector indicates network-reachable exploitation with low attack complexity, no privileges required, and no user interaction required.
What can an attacker do if they exploit this issue?
A remote attacker can write limited files and cause limited denial-of-service conditions. The supplied impact information indicates integrity and availability impact, with no confidentiality impact.