ZDI-26-480: OSNEXUS QuantaStor Missing Authentication Remote Code Execution Vulnerability
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. Was ZDI-CAN-30036.
AI Analysis
Technical Summary
CVE-2026-18265 is a critical remote code execution vulnerability in OSNEXUS QuantaStor caused by missing authentication in the Kapacitor configuration. This allows remote attackers to execute arbitrary code with root privileges without any authentication. The vulnerability affects all versions before 6.8.0. The vendor has released QuantaStor 6.8.0 which fixes this issue by adding the necessary authentication controls.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code as root on affected systems without authentication, leading to full system compromise. The vulnerability has a high CVSS score of 9.8, indicating critical impact on confidentiality, integrity, and availability.
Mitigation Recommendations
A vendor-provided patch is available in QuantaStor version 6.8.0. Users should upgrade to version 6.8.0 or later to remediate this vulnerability. No other mitigation is indicated by the vendor advisory.
ZDI-26-480: OSNEXUS QuantaStor Missing Authentication Remote Code Execution Vulnerability
Description
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. Was ZDI-CAN-30036.
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 in the Kapacitor configuration. This allows remote attackers to execute arbitrary code with root privileges without any authentication. The vulnerability affects all versions before 6.8.0. The vendor has released QuantaStor 6.8.0 which fixes this issue by adding the necessary authentication controls.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code as root on affected systems without authentication, leading to full system compromise. The vulnerability has a high CVSS score of 9.8, indicating critical impact on confidentiality, integrity, and availability.
Mitigation Recommendations
A vendor-provided patch is available in QuantaStor version 6.8.0. Users should upgrade to version 6.8.0 or later to remediate this 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}
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
Threat ID: 6a6b74c59c2644c7f84cc2b5
Added to database: 07/30/2026, 15:59:01 UTC
Last enriched: 08/15/2026, 05:16:05 UTC
Last updated: 09/14/2026, 22:01:32 UTC
Views: 47
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