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 ZDI has assigned a CVSS rating of 9.8. The following CVEs are assigned: CVE-2026-18265.
AI Analysis
Technical Summary
CVE-2026-18265 is a critical remote code execution vulnerability in OSNEXUS QuantaStor caused by missing authentication checks in the Kapacitor component. This allows remote attackers to execute arbitrary code as root without any authentication. The vulnerability has a CVSS v3 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). It was reported to the vendor on June 10, 2026, and publicly disclosed on July 29, 2026. The vendor has released a fix in QuantaStor 6.8.0 to address this issue.
Potential Impact
Remote attackers can exploit this vulnerability without authentication to execute arbitrary code with root privileges on affected QuantaStor installations. This can lead to full system compromise, including complete control over confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Apply the official fix by upgrading to QuantaStor version 6.8.0 or later. This update addresses the missing authentication in the Kapacitor configuration and mitigates the vulnerability. No other mitigation is indicated by the vendor advisory.
ZDI-26-480: OSNEXUS QuantaStor Missing Authentication Remote Code Execution Vulnerability
Description
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.
Affected software
pkg:github/osnexus/quantasstorRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18265 is a critical remote code execution vulnerability in OSNEXUS QuantaStor caused by missing authentication checks in the Kapacitor component. This allows remote attackers to execute arbitrary code as root without any authentication. The vulnerability has a CVSS v3 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). It was reported to the vendor on June 10, 2026, and publicly disclosed on July 29, 2026. The vendor has released a fix in QuantaStor 6.8.0 to address this issue.
Potential Impact
Remote attackers can exploit this vulnerability without authentication to execute arbitrary code with root privileges on affected QuantaStor installations. This can lead to full system compromise, including complete control over confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Apply the official fix by upgrading to QuantaStor version 6.8.0 or later. This update addresses the missing authentication in the Kapacitor configuration and mitigates the vulnerability. No other mitigation is indicated by the vendor advisory.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-480/","fetched":true,"fetchedAt":"2026-07-30T15:56:05.823Z","wordCount":168}
Threat ID: 6a6b74c59c2644c7f84cc2b5
Added to database: 07/30/2026, 15:59:01 UTC
Last enriched: 07/30/2026, 16:05:15 UTC
Last updated: 07/31/2026, 12:28:13 UTC
Views: 5
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