CVE-2021-33182: Synology Diskstation Manager

Medium severity, CVSS 4.3. EPSS: 1.1% chance of exploitation in the next 30 days.

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in PDF Viewer component in Synology DiskStation Manager (DSM) before 6.2.4-25553 allows remote authenticated users to read limited files via unspecified vectors.

Affected products

• Synology Diskstation Manager: before 6.2.4-25553 (fixed in 6.2.4-25553)

Published 2021-06-01. Last modified 2026-06-17.