CVE-2026-18265
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.
INFO
Published Date :
Aug. 20, 2026, 5:17 p.m.
Last Modified :
Oct. 18, 2026, 8:10 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.0 | CRITICAL | 99f1926a-a320-47d8-bbb5-42feb611262e | ||||
| CVSS 3.0 | CRITICAL | [email protected] | ||||
| CVSS 3.0 | CRITICAL | MITRE-CVE |
Solution
- Update OSNEXUS QuantaStor.
- Verify Kapacitor configuration.
- Ensure authentication is enforced.
- Restrict access to Kapacitor.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-18265.
| URL | Resource |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-26-480/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-18265 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-18265
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-18265 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-18265 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 18, 2026
Action Type Old Value New Value Added Translation Title: QuantaStor de OSNEXUS, Description: Vulnerabilidad de ejecución remota de código por falta de autenticación en OSNEXUS QuantaStor. Esta vulnerabilidad permite a atacantes remotos ejecutar código arbitrario en instalaciones afectadas de OSNEXUS QuantaStor. No se requiere autenticación para explotar esta vulnerabilidad. La falla específica reside dentro de la configuración de Kapacitor. El problema se debe a la falta de autenticación antes de permitir el acceso a la funcionalidad. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto de root. Fue ZDI-CAN-30036. -
CVE Modified by [email protected]
Aug. 26, 2026
Action Type Old Value New Value Added Reference https://www.zerodayinitiative.com/advisories/ZDI-26-480/ Removed Reference https://www.zerodayinitiative.com/advisories/ZDI-26-480/ -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 26, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-18265', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-26T19:41:53.411316Z'} -
New CVE Received by [email protected]
Aug. 20, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'OSNEXUS', 'product': 'QuantaStor', 'versions': [{'status': 'affected', 'version': '6.7.3.010+9c965a6414'}], 'defaultStatus': 'unknown'}] Added 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. Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-306 Added Reference https://www.zerodayinitiative.com/advisories/ZDI-26-480/