# CVE-2026-56432: Intel TDX Migration Trust Domain confused deputy in signing

Source: https://junglewise.ai/threats/cve-2026-56432-unintended-proxy-or-intermediary-confused-deputy-in-the-migtd  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-56432 · Severity: info · Published 2026-11-10

Intel's TDX Migration Trust Domain (MigTD) is a component that facilitates secure migration of virtual machines with Trusted Execution capabilities. A confused deputy vulnerability in the signing mechanism allows a privileged attacker to escalate privileges and compromise system integrity. An attacker with system software privileges could gain complete control over sensitive virtual machine operations and data confidentiality.

Technologies: [Intel TDX Migration Trust Domain (MigTD)](https://junglewise.ai/threats/technologies/tdx-migration-trust-domain-migtd). Vendors: [Intel](https://junglewise.ai/threats/vendors/intel).

## Quick answers

**Is CVE-2026-56432 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56432 being exploited in the wild.

**How severe is CVE-2026-56432?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** Intel TDX Migration Trust Domain (MigTD).

**Is there a fix for CVE-2026-56432?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-56432 attacked?** It is attacked with local access, in device firmware.

**Am I affected by CVE-2026-56432?** Check whether you run Intel TDX Migration Trust Domain (MigTD). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a confused deputy issue in MigTD signing (CVE-2026-56432) occurring in Ring 0 hypervisor context. A system software adversary with privileged user access can exploit this via local access with low complexity to achieve privilege escalation, impacting system integrity and confidentiality. The advisory indicates this is part of a broader set of MigTD vulnerabilities requiring firmware/reference software updates.

## Affected products

- Intel TDX Migration Trust Domain (MigTD)

## Timeline

- 2026-11-10: disclosed

## References

- [https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01580.html](https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01580.html)

## Related threats

- [Intel TDX Migration Trust Domain improper initialization in virtio-vsock](https://junglewise.ai/threats/cve-2026-63028-improper-initialization-in-the-migtd-virtio-vsock-stream-handling)
- [Intel TDX Migration Trust Domain hypervisor denial of service](https://junglewise.ai/threats/cve-2026-63027-incorrect-behavior-order-in-the-get-tcb-level-by-svn-for-the)
- [Intel TDX Migration Trust Domain TLS unchecked return value DoS](https://junglewise.ai/threats/cve-2026-62930-unchecked-return-value-in-the-migtd-s-tls-implementation-for-the)
- [Intel TDX Migration Trust Domain expired pointer dereference](https://junglewise.ai/threats/cve-2026-62929-expired-pointer-dereference-in-the-migtd-s-virtio-vsock)
- [Intel TDX Migration Trust Domain multiple vulnerabilities](https://junglewise.ai/threats/cve-2026-62920-unchecked-return-value-in-the-migtd-error-handling-for-the-intel)