CVE-2026-20765

Privilege Escalation via Incorrect Comparison in Intel TDX Guest

Published Aug 11, 2026 CVSS 4.0 · 4.6 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Intel trust Domain Extensions Guest
CPEs cpe:2.3:a:intel:trust_domain_extensions_guest:*:*:*:*:*:*:*:*
Vendors & Products Intel trust Domain Extensions Guest
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L'}

Type Values Removed Values Added
First Time appeared Intel
Intel tdx Guest Software
Vendors & Products Intel
Intel tdx Guest Software
Type Values Removed Values Added
Title Privilege Escalation via Incorrect Comparison in Intel TDX Guest
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Weaknesses CWE-697
References
Metrics cvssV4_0

{'score': 4.6, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
intel
Published
Updated
Aug 12, 2026, 3:54 PM
Reserved
Jan 13, 2026, 4:00 AM
Status
Analyzed
Published
Aug 11, 2026, 5:17 PM
Modified
Aug 18, 2026, 3:48 PM