CVE-2026-20765: Escalation of Privilege in Intel(R) TDX Guest software
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.
AI Analysis
Technical Summary
This vulnerability in Intel(R) TDX Guest software prior to version 0.3.1 arises from an incorrect comparison in Ring 3 user applications, which may allow escalation of privilege by a system software adversary possessing privileged user access. The attack requires local access, no user interaction, and low complexity, but does not require special internal knowledge. The potential impact is limited to low confidentiality, integrity, and availability impacts on the vulnerable system, with no subsequent broader system impacts reported. The CVSS 4.0 base score is 4.6, indicating medium severity. No patch or remediation level has been disclosed by the vendor as of the publication date.
Potential Impact
The vulnerability may allow a local system software adversary with privileged user rights to escalate privileges within the Intel(R) TDX Guest software environment. The impact on confidentiality, integrity, and availability is rated as low at the vulnerable system level, with no further impact on overall system confidentiality, integrity, or availability. There are no reports of exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level has been published, users should monitor Intel's advisories for updates. No specific mitigation steps are provided by the vendor at this time.
CVE-2026-20765: Escalation of Privilege in Intel(R) TDX Guest software
Description
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 v4.0
Score 4.6medium
Affected software
Intel(R) TDX Guest software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Intel(R) TDX Guest software prior to version 0.3.1 arises from an incorrect comparison in Ring 3 user applications, which may allow escalation of privilege by a system software adversary possessing privileged user access. The attack requires local access, no user interaction, and low complexity, but does not require special internal knowledge. The potential impact is limited to low confidentiality, integrity, and availability impacts on the vulnerable system, with no subsequent broader system impacts reported. The CVSS 4.0 base score is 4.6, indicating medium severity. No patch or remediation level has been disclosed by the vendor as of the publication date.
Potential Impact
The vulnerability may allow a local system software adversary with privileged user rights to escalate privileges within the Intel(R) TDX Guest software environment. The impact on confidentiality, integrity, and availability is rated as low at the vulnerable system level, with no further impact on overall system confidentiality, integrity, or availability. There are no reports of exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level has been published, users should monitor Intel's advisories for updates. No specific mitigation steps are provided by the vendor at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- intel
- Date Reserved
- 2026-01-13T04:00:20.830Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a7b546abf8831d539106a45
Added to database: 08/11/2026, 16:57:14 UTC
Last enriched: 08/12/2026, 00:12:39 UTC
Last updated: 09/24/2026, 13:47:43 UTC
Views: 27
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