CVE-2025-31936 Intel CVE debrief

Who should care

System administrators and security teams responsible for Intel Xeon 6 processors should assess exposure and apply patches or mitigations as necessary. This includes teams managing servers, workstations, and other high-performance computing environments that use the affected processors. Additionally, security teams should review system configurations to ensure they align with security best practices and perform regular security audits to identify andaddress

Why it matters

CVE-2025-31936 is a high-severity vulnerability affecting Intel Xeon 6 processors. It allows for potential escalation of privilege. System administrators and security teams should assess exposure and apply patches or mitigations as necessary.

• Escalation of privilege for a SMM adversary
• Potential local access with special internal knowledge
• High complexity attack required
• No user interaction required for exploitation

Technical summary

The vulnerability is due to improper handling of overlap between protected memory ranges for some Intel(R) Xeon(R) 6 processors when using Intel(R) TDX within SMM. This may allow a SMM adversary with a privileged user combined with a high complexity attack to enable escalation of privilege. The vulnerability has a high CVSS score of 7, indicating a significant risk to systems that use the affected processors. The affected processors are used in a variety of systems, including servers, workstations, and other high-performance computing environments.

Defensive priority

High

Recommended defensive actions

• Review and apply patches from Intel for affected Xeon 6 processors
• Restrict access to sensitive areas of the system
• Monitor system logs for suspicious activity
• Implement compensating controls to limit potential damage
• Conduct a thorough review of system configurations to ensure they align with security best practices
• Perform regular security audits to identify and address potential vulnerabilities
• Engage with Intel support for additional guidance on mitigating this vulnerability

Evidence notes

The vulnerability description notes that improper handling of overlap between protected memory ranges for some Intel(R) Xeon(R) 6 processors when using Intel(R) TDX within SMM may allow an escalation of privilege. A SMM adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.