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CVE-2026-56759VulnerabilityPublished

Improper Input Validation

Source GCVE Database

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Authoritative record:CVE-2026-56759· Medium 6.7

Not known to be exploited · CVSS 6.7 Medium.

Data as of 10 Nov 2026, 19:18 UTC

CVSS 4.0 base score
6.7Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (intel)CVSS 4.06.7
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Intel(R) TDX Migration Trust Domain (MigTD)Affected
  • =See references
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.

References

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