Improper Input Validation
Source GCVE Database
Not known to be exploited · CVSS 6.7 Medium.
Data as of 10 Nov 2026, 19:18 UTC
Thin evidence
One scorer or none| CNA (intel) | CVSS 4.0 | 6.7 |
|---|
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 10 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Intel(R) TDX Migration Trust Domain (MigTD) | Affected
| Fixed in– |
AI-suggested
Since the vulnerability requires privileged local access, restricting such access and monitoring for unusual privileged activity may help mitigate risk until a fix is available.
Description
CVE-2026-56759 is an improper input validation vulnerability in the MigTD PCI BAR handling for the Intel TDX Migration Trust Domain within the hypervisor's Ring 0. This flaw may allow a system software adversary with privileged user access to escalate privileges and cause data corruption. The attack requires local access, low complexity, no user interaction, and no special internal knowledge. The vulnerability impacts system integrity but not confidentiality or availability.