#VU126268 Path traversal in DiskStation Manager (DSM) - CVE-2026-40535
Published: April 16, 2026
Vulnerability identifier: #VU126268
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-40535
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
DiskStation Manager (DSM)
DiskStation Manager (DSM)
Software vendor:
Synology Inc.
Synology Inc.
Description
The vulnerability allows a remote attacker to read or write limited files and cause a denial of service.
The vulnerability exists due to path traversal in DSM when processing crafted path input. A remote attacker can send a specially crafted request to read or write limited files and cause a denial of service.
Remediation
Install security update from vendor's website.