Trust Domain Extensions Guest CVEs and Security Vulnerabilities

CVE-2026-20765

Privilege Escalation via Incorrect Comparison in Intel TDX Guest

Incorrect comparison 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.

CVSS 4.0 · 4.6 Medium EPSS < 1% KEV · Not listed

Vendors

Intel

Products

Tdx Guest Software Trust Domain Extensions Guest

CVE-2026-20763

Privilege Escalation via Incorrect Integer Calculation in Intel TDX Guest Software

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.