Exposure of Sensitive Information Through Data Queries in DiskStation Manager (DSM) - CVE-2026-40533
Published: April 16, 2026
Vulnerability identifier: #VU126266
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-40533
CWE-ID: CWE-202
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Synology Inc.
Affected software:
DiskStation Manager (DSM)
DiskStation Manager (DSM)
Detailed vulnerability description
The vulnerability allows a remote attacker to obtain non-sensitive information.
The vulnerability exists due to exposure of sensitive information through data queries in DSM when processing data queries. A remote attacker can send a specially crafted request to obtain non-sensitive information.
How to mitigate CVE-2026-40533
Install security update from vendor's website.