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CVE-2026-23562 is an authorization flaw in XAPI role-based access control affecting PCI passthrough configuration. PCI passthrough configuration is intended to be restricted to the fully privileged pool-admin role, but one API omitted the required privilege check. As a result, a lower-privileged vm-admin user can invoke that API to configure PCI passthrough despite not being authorized to do so. The issue is a privilege-boundary failure in administrative control enforcement rather than a memory-safety bug, and it enables access to host hardware that should remain unavailable to the vm-admin role.
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12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Authorization flaw in XAPI RBAC where a missing privilege check on a PCI passthrough API allows a vm-admin to access unintended host hardware.
A missing authorization check in XAPI/XenServer allows a vm-admin to configure PCI passthrough despite it being intended only for pool-admins, granting unintended access to host hardware.
Authorization flaw in XAPI RBAC where a missing privilege check on a PCI passthrough API allows a vm-admin to access unintended host hardware.
One of the confirmed actionable XAPI RBAC escalation vulnerabilities discussed in XSA-489/VSA-2026-011.
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Every observed campaign linking this CVE to a named adversary.
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YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.