CVE-2021-33183: Synology Docker

High severity, CVSS 7.9. EPSS: 0.3% chance of exploitation in the next 30 days.

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability container volume management component in Synology Docker before 18.09.0-0515 allows local users to read or write arbitrary files via unspecified vectors.

Affected products

• Synology Docker: before 18.09.0-0515 (fixed in 18.09.0-0515)

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