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TI-2026-16803 Aliases CVE-2026-20763GHSA-wgvc-hf5h-m5h7

Incorrect calculation for some Intel(R) TDX Guest software before version 0.3.1 within…

Priority LOW 20CWE-682Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Incorrect calculation for some Intel(R) TDX Guest software before version 0.3.1 within Ring 3: User Applications may allow an escalation of privilege. System software adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. 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 (low), integrity (low) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00149 4th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Intel(R) TDX Guest softwarebefore version 0.3.1—No fix listedCNA
  • Intel(R) TDX Guest software Vendor— Affected before version 0.3.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:intel:trust_domain_extensions_guest:*:*:*:*:*:*:*:*before 0.3.1VulnerableIntel
  • cpe:2.3:a:intel:trust_domain_extensions_guest:*:*:*:*:*:*:*:* Versions before 0.3.1 Vulnerable ·Intel

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-20763
  2. 2026-10-03 Alias added: GHSA-wgvc-hf5h-m5h7

References

Advisory 1

  • TI-2026-16805 Incorrect comparison in Intel TDX Guest software CVSS 4.0MEDIUM 4.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences