---
id: "CVE-2026-63027"
page: "https://infrastack.ai/live/CVE-2026-63027"
kind: "vulnerability"
aliases: ["CVE-2026-63027"]
title: "Intel TDX MigTD: incorrect check order lets a hypervisor cause denial of service"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["confidential-computing", "hypervisor", "infrastructure", "intel-tdx", "migtd"]
not_affected_if: ["no-tdx-migration"]
published_at: "2026-11-10T18:17:45+00:00"
first_seen_at: "2026-11-10T18:23:00+00:00"
updated_at: "2026-11-10T18:25:16+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63027", "first_seen_at": "2026-11-10T18:23:00+00:00"}]
exploit_sources: []
---

# Intel TDX MigTD: incorrect check order lets a hypervisor cause denial of service

Link for people: https://infrastack.ai/live/CVE-2026-63027 (this .md is for agents)

A flaw in how the Intel TDX Migration Trust Domain (MigTD) handles TCB level checks by SVN can let a hypervisor-adjacent attacker cause a denial of service. The sources describe only an availability impact, with no confidentiality or integrity loss.

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

## Timeline

- 2026-11-10T18:23:00+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-63027

## From the sources

Incorrect behavior order in the get_tcb_level_by_svn for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow a denial of service. Network adversary with an unauthenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via adjacent 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 (none) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_