CVE-2025-27940
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Out-of-Bounds Read in Intel TDX Module Causes Data Disclosure

Publication date: 2026-02-10

Last updated on: 2026-02-10

Assigner: Intel Corporation

Description
Out-of-bounds read for some TDX Module before version tdx1.5 within Ring 0: Hypervisor may allow an information disclosure. Software side channel adversary with a privileged user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
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Meta Information
Published
2026-02-10
Last Modified
2026-02-10
Generated
2026-06-16
AI Q&A
2026-02-10
EPSS Evaluated
2026-06-15
NVD
CVE-2025-27940
EUVD
EUVD-2025-207272
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
intel tdx_module to tdx1.5 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
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Executive Summary

This vulnerability is an out-of-bounds read issue in some versions of the TDX Module before version tdx1.5. It occurs within Ring 0, where the hypervisor may allow an information disclosure. Essentially, a software side channel adversary with privileged user access and a high complexity attack could potentially expose sensitive data. The attack requires local access, does not need special internal knowledge, and does not require user interaction.

Impact Analysis

The vulnerability primarily impacts the confidentiality of the system, potentially allowing sensitive information to be disclosed. It does not affect the integrity or availability of the system. The attack requires a privileged user and local access, and it is considered a high complexity attack.

Compliance Impact

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Detection Guidance

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