CVE-2026-20763: Medium severity Intel(R) TDX Guest software vulnerability
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Intel(R) TDX Guest softwareto a version that resolves this vulnerability.Fixed in 0.3.1
Event History
Frequently Asked Questions
What is the severity of CVE-2026-20763?
CVE-2026-20763 has a risk score of 27, indicating a notable security vulnerability.
How do I fix CVE-2026-20763?
To address CVE-2026-20763, update Intel(R) TDX Guest software to version 0.3.1 or later.
What type of attack does CVE-2026-20763 allow?
CVE-2026-20763 allows for escalation of privilege attacks on affected systems.
What software is affected by CVE-2026-20763?
CVE-2026-20763 affects Intel(R) TDX Guest software versions prior to 0.3.1.
Who is at risk from CVE-2026-20763?
System software adversaries with privileged access using low complexity attacks are at risk from CVE-2026-20763.