CVE-2025-32007: Intel TDX Module Information Disclosure

CVE-2025-32007 Overview

CVE-2025-32007 is an out-of-bounds read vulnerability affecting Intel Trust Domain Extensions (TDX) module versions prior to 1.5.24. This memory corruption flaw exists within Ring 0 (Hypervisor level), allowing a privileged adversary with local access to potentially disclose sensitive information from memory regions outside intended boundaries.

Critical Impact

Privileged local attackers can exploit this out-of-bounds read vulnerability to access confidential data from memory, potentially exposing sensitive information processed within the hypervisor context.

Affected Products

• Intel TDX Module versions before 1.5.24
• Systems utilizing Intel Trust Domain Extensions with vulnerable TDX module firmware

Discovery Timeline

• 2026-02-10 - CVE CVE-2025-32007 published to NVD
• 2026-02-10 - Last updated in NVD database

Technical Details for CVE-2025-32007

Vulnerability Analysis

This vulnerability is classified as CWE-125 (Out-of-bounds Read), a memory corruption issue where software reads data past the end or before the beginning of an intended buffer. In the context of Intel TDX, this occurs within the hypervisor ring (Ring 0), which is the most privileged execution level in x86 architecture.

The out-of-bounds read condition allows an attacker with privileged access to potentially read memory contents that should be protected, leading to information disclosure. While the vulnerability requires local access and elevated privileges, the hypervisor-level nature of the flaw means that successful exploitation could expose data from protected Trust Domains.

The vulnerability has a high impact on confidentiality but does not affect integrity or availability of the affected systems. This indicates that while attackers can read sensitive data, they cannot modify system state or cause denial of service through this specific vulnerability.

Root Cause

The root cause of CVE-2025-32007 stems from improper bounds checking within the Intel TDX module's memory handling routines. When processing certain operations at the hypervisor level, the module fails to adequately validate memory access boundaries, allowing read operations to extend beyond allocated buffer regions. This type of vulnerability typically occurs when array indices or pointer arithmetic is not properly constrained against buffer size limits.

Attack Vector

The attack vector for this vulnerability requires local access to the affected system with high-privilege user credentials. The attacker must have the ability to execute code within a privileged context on the target machine.

The vulnerability exploits the out-of-bounds read condition in the TDX module to access memory regions that should be inaccessible. While specific attack requirements must be present, the exploitation does not require specialized internal knowledge of the system or any user interaction.

Successful exploitation occurs through memory read operations that exceed intended boundaries within the hypervisor context. Technical details and specific exploitation methods are documented in the Intel Security Advisory Intel-SA-01397.

Detection Methods for CVE-2025-32007

Indicators of Compromise

• Unexpected memory access patterns within TDX module operations at the hypervisor level
• Anomalous privileged process behavior attempting to interact with TDX interfaces
• System logs indicating boundary violations or memory access exceptions in hypervisor contexts

Detection Strategies

• Monitor for privileged processes making suspicious TDX-related system calls
• Implement memory access auditing for hypervisor-level operations where supported
• Deploy endpoint detection solutions capable of monitoring Ring 0 activity

Monitoring Recommendations

• Enable verbose logging for TDX module operations to capture potential exploitation attempts
• Implement host-based intrusion detection to monitor for anomalous privileged activity
• Review system event logs for indicators of memory boundary violations

How to Mitigate CVE-2025-32007

Immediate Actions Required

• Update Intel TDX module to version 1.5.24 or later immediately
• Review and restrict privileged access to systems running vulnerable TDX module versions
• Audit systems to identify all instances running affected TDX module versions

Patch Information

Intel has released TDX module version 1.5.24 which addresses this vulnerability. Organizations should obtain the updated firmware through official Intel channels and apply it according to their firmware update procedures. For detailed patching guidance and firmware downloads, refer to the Intel Security Advisory Intel-SA-01397.

Workarounds

• Restrict local privileged access to affected systems until patching is complete
• Implement strict access controls limiting who can execute privileged operations on TDX-enabled systems
• Consider network isolation for critical systems running vulnerable TDX module versions until updates can be applied

# Verify TDX module version (example command)
# Consult Intel documentation for your specific platform
dmesg | grep -i "tdx"