Intel TDX Migration Trust Domain vmcall_raw transport off-by-one

Summaryinfo

A vulnerability described as problematic has been identified in Intel TDX Migration Trust Domain. This impacts the function vmcall_raw transport. Such manipulation leads to off-by-one. This vulnerability is referenced as CVE-2026-61469. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability was found in Intel TDX Migration Trust Domain (unknown version). It has been rated as problematic. Affected by this issue is the function vmcall_raw transport. The manipulation with an unknown input leads to a off-by-one vulnerability. Using CWE to declare the problem leads to CWE-193. A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value. Impacted is integrity, and availability. CVE summarizes:

Off-by-one error in the MigTD's vmcall_raw transport for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow a denial of service. System software adversary with an unauthenticated user combined with a low complexity attack may enable data corruption. 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 (low) and availability (low) 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-2026-61469 since 07/15/2026. The exploitation is known to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k 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.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Intel

Name

• TDX Migration Trust Domain

License

• commercial

Website

• Vendor: https://www.intel.com/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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