CVE-2021-29088: Synology Diskstation Manager

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Improper limitation of a pathname to a restricted directory ('Path Traversal') in cgi component in Synology DiskStation Manager (DSM) before 6.2.4-25553 allows local users to execute arbitrary code 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.