Intel Xeon TDX Priv Escalation via SMM Mem Range Overlap
CVE-2025-31936 Published on August 11, 2026
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. 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. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Vulnerability Analysis
CVE-2025-31936 is exploitable with local system access, and requires user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
Improper Handling of Overlap Between Protected Memory Ranges
The product allows address regions to overlap, which can result in the bypassing of intended memory protection.
Products Associated with CVE-2025-31936
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