EUVD-2026-56471
GHSA-4hx7-cvpj-f259
Severity by source
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local-only access, Ring-0 privileges required, high complexity with specific prerequisites; scope changes because TD confidentiality boundary is crossed, affecting subsequent system.
Primary rating from Vendor (intel).
CVSS VectorVendor: intel
Lifecycle Timeline
1DescriptionCVE.org
Insecure storage of sensitive information in the Intel(R) TDX module for some Intel(R) platform within Ring 0: Trust Domain may allow information disclosure. System software 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 (high), integrity (none) and availability (none) impacts.
AnalysisAI
Insecure sensitive data storage in the Intel Trust Domain Extensions (TDX) module exposes confidential memory to privileged local adversaries on affected Intel platforms. The flaw, classified under CWE-922, allows a Ring-0 system software attacker - such as a compromised or malicious hypervisor or host OS kernel - to read data that should be protected within a Trust Domain, breaking TDX's core confidential computing isolation guarantee. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires all of the following to be true simultaneously: (1) The target system must be an Intel platform with TDX support enabled in firmware and an active Trust Domain workload running. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 6.8 (Medium) reflects the compounding mitigating factors in the attack requirements: local access only (AV:L), high attack complexity (AC:H), specific attack prerequisites (AT:P), and high privilege level (PR:H). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary remediation is to apply Intel's firmware or microcode update addressing INTEL-SA-01436, available through the Intel Product Security Incident Response advisory at https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01436.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-922 – Insecure Storage of Sensitive Information
View allSame technique Information Disclosure
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External POC / Exploit Code
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