---
id: "CVE-2026-56432"
page: "https://infrastack.ai/live/CVE-2026-56432"
kind: "vulnerability"
aliases: ["CVE-2026-56432"]
title: "Intel TDX MigTD signing flaw lets a hypervisor escalate privileges"
severity: "high"
cvss: 8.2
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Intel TDX Migration TD (MigTD) reference software", "fixed": ["0.7.2"], "affected": "< 0.7.2", "ecosystem": "vendor"}]
ecosystems: []
tags: ["confidential-computing", "hypervisor", "infrastructure", "intel-tdx", "migtd"]
not_affected_if: ["managed-hosting", "no-tdx-migration"]
published_at: "2026-11-10T18:17:41+00:00"
first_seen_at: "2026-11-10T18:22:58+00:00"
updated_at: "2026-11-10T18:27:00+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56432", "first_seen_at": "2026-11-10T18:22:58+00:00"}, {"source": "analyst", "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01580.html", "first_seen_at": "2026-11-10T18:27:00+00:00", "cites": ["https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01580.html", "https://github.com/intel/MigTD/releases/tag/v0.7.2"]}]
exploit_sources: []
---

# Intel TDX MigTD signing flaw lets a hypervisor escalate privileges

Link for people: https://infrastack.ai/live/CVE-2026-56432 (this .md is for agents)

Intel advisory INTEL-SA-01580 (one of a batch of MigTD CVEs) covers a confused-deputy flaw in MigTD signing. A privileged system-software attacker could escalate privileges; CVSS 4.0 is 8.2. Fixed in MigTD 0.7.2.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Intel TDX Migration TD (MigTD) reference software affected < 0.7.2 fixed 0.7.2

## How to check

Check the MigTD build your TDX hosts/cloud provider use for live migration: any MigTD reference software version before 0.7.2 is affected. Hosts not using TD live migration do not run MigTD.

## Fix

Update Intel TDX Migration TD (MigTD) reference software to version 0.7.2 or later (GitHub release v0.7.2).

## Timeline

- 2026-11-10T18:22:58+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-56432
- 2026-11-10T18:27:00+00:00 analyst https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01580.html — Read Intel INTEL-SA-01580 (released 2026-11-10): affected MigTD < 0.7.2, fix 0.7.2 per Intel and GitHub release link. Advisory is a batch of ~13 MigTD CVEs; overall rated Medium but this CVE is 8.2 High. No exploitation or PoC seen; did not search social posts. No Intel-stated workaround.

## Documents

- [advisory] INTEL-SA-01580 Intel TDX Migration Trust Domain (MigTD) Advisory https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01580.html
- [fix] intel/MigTD v0.7.2 https://github.com/intel/MigTD/releases/tag/v0.7.2

## From the sources

Unintended proxy or intermediary ('confused deputy') in the MigTD signing for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow an escalation of privilege. System software adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts.

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