ZDI-26-480: OSNEXUS QuantaStor Missing Authentication Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of OSNEXUS QuantaStor. Authentication is not required to exploit this vulnerability. The specific flaw exists within the configuration of Kapacitor. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to execute code in the context of root.
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of OSNEXUS QuantaStor. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.8. The following CVEs are assigned: CVE-2026-18265.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
Authentication is not required. A remote attacker can exploit the vulnerability to execute arbitrary code on an affected OSNEXUS QuantaStor installation.
How severe is this vulnerability?
ZDI assigned a CVSS score of 9.8, and the listed risk score is 95. Successful exploitation enables arbitrary code execution remotely.