CVE-2026-56759
Intel TDX Migration Trust Domain PCI BAR Improper Input Validation Privilege Escalation
Description
Improper input validation in the MigTD PCI BAR handling 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 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 (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
INFO
Published Date :
Nov. 10, 2026, 5:46 p.m.
Last Modified :
Nov. 10, 2026, 5:46 p.m.
Remotely Exploit :
No
Source :
intel
Affected Products
The following products are affected by CVE-2026-56759
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | 6dda929c-bb53-4a77-a76d-48e79601a1ce |
Solution
- Update system software to patch Intel TDX.
- Validate all input data rigorously.
- Restrict privileged user access.
- Implement integrity checks for critical data.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-56759 vulnerability anywhere in the article.