CVE-2026-44685
Received Received - Intake

Authentication Bypass via Spoofing in Intel TDX MigTD

Publication date: 2026-11-10

Last updated on: 2026-11-10

Assigner: Intel Corporation

Description
Authentication bypass by spoofing in the MigTD rebinding protocol 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 local code execution. 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 (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (high) impacts.

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Meta Information

Published
2026-11-10
Last Modified
2026-11-10
Generated
2026-11-10
AI Q&A
2026-11-10
EPSS Evaluated
N/A
NVD
CVE-2026-44685
EUVD
EUVD-2026-121664

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
intel tdx_migration_trust_domain *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-290 This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

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Executive Summary

This is an authentication bypass vulnerability in the MigTD rebinding protocol for Intel TDX Migration Trust Domain. It allows a system software adversary with privileged access to bypass authentication and execute code locally. The attack has low complexity and requires no special internal knowledge or user interaction.

Impact Analysis

An attacker could exploit this to gain elevated privileges on the system, leading to potential compromise of confidentiality, integrity, and availability. This may result in unauthorized access, data tampering, or system disruption.

Compliance Impact

This vulnerability allows local code execution with high impact on confidentiality, integrity, and availability. Such unauthorized access could lead to unauthorized data exposure or modification, which may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information.

Mitigation Strategies

Apply Intel's official security updates or patches for the Intel TDX Migration Trust Domain (MigTD) as soon as they become available. Monitor Intel's security advisories for mitigation guidance and restrict local access to privileged users to reduce attack surface.

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