Vulnerability details
CVE-2026-18265
Osnexus QuantaStor
OSNEXUS QuantaStor Missing Authentication Remote Code Execution Vulnerability
CVSS 3.0
9.8Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.0 | CVEProject cvelistV5 (CNA) (zdi) | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Osnexus | QuantaStor | 6.7.3.010+9c965a6414 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://www.zerodayinitiative.com/advisories/ZDI-26-480/ x_research-advisory
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Details
- Published
- 2026-08-20
- Last updated
- 2026-08-26
- State
- Published
- Assigner (CNA)
- zdi
Exploit prediction (EPSS)
1.03%
Probability of exploitation in 30 days
64%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-306Missing Authentication for Critical Function