CVE-2026-18265CWE-306

CVE-2026-18265

Critical · published August 20, 2026

CVSS v3.0
9.8
EPSS
1%
Percentile
52.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.0
9.8 · CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00692 · 52.3th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-08-20T21:17Z
References (1)
EPSS history
Timeline
  • 20 AUG 16:13Z
    OSNEXUS QuantaStor Missing Authentication Remote Code Execution Vulnerability
    cvelistv5