OS Command Injection in Azure CycleCloud - CVE-2026-100207
Published: October 14, 2026
Vulnerability identifier: #VU155784
CSH Severity: Medium
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-100207
CWE-ID: CWE-78
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to execute arbitrary code on a connecting workstation.
The vulnerability exists due to improper neutralization of special elements used in an OS command in Azure CycleCloud when connecting to a Windows node using the Azure CycleCloud CLI from a macOS or Linux workstation. A local user can configure specially crafted Windows node credentials to execute arbitrary code on a connecting workstation.
Exploitation requires permission to create or manage a cluster and configure the node's credentials. A different user must initiate the CLI connection.
Affected software
Azure CycleCloud
How to mitigate CVE-2026-100207
Install security update from vendor's website.
Azure CycleCloud - update to 8.9.2