Improper access control in XenAPI Server - CVE-2026-23562
Published: April 29, 2026
Vulnerability identifier: #VU128449
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23562
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Xen Project
Affected software:
XenAPI Server
XenAPI Server
Detailed vulnerability description
The vulnerability allows a remote user to access unintended host hardware.
The vulnerability exists due to improper access control in a PCI passthrough API when configuring PCI passthrough. A remote user can invoke the API without the intended pool-admin restriction to access unintended host hardware.
The vulnerability is exposed only when RBAC is configured for the pool.
How to mitigate CVE-2026-23562
Install security update from vendor's website.