Intel Hypervisor MigTD race condition

Summaryinfo

A vulnerability classified as problematic was found in Intel Hypervisor. This affects an unknown function of the component MigTD. Such manipulation leads to race condition. This vulnerability is listed as CVE-2026-49036. The attack must be carried out locally. There is no available exploit.

Detailsinfo

A vulnerability was found in Intel Hypervisor (version unknown) and classified as problematic. Affected by this issue is an unknown function of the component MigTD. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. Impacted is integrity, and availability. CVE summarizes:

Time-of-check time-of-use race condition in the MigTD shared memory for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow a denial of service. System software adversary with a privileged user combined with a low complexity attack may enable data corruption. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

The advisory is available at intel.com. This vulnerability is handled as CVE-2026-49036 since 07/15/2026. The exploitation is known to be easy. Local access is required to approach this attack. Additional levels of successful authentication are necessary for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/10/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Intel

Name

• Hypervisor

License

• commercial

Website

• Vendor: https://www.intel.com/

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