CVE-2025-31936
HighCVSS 7.0Exploitation Probability (EPSS)
Low risk1th percentile - higher than 1% of all known CVEs
Summary
Improper handling of overlap between protected memory ranges for some Intel Xeon 6 processors when using Intel TDX within SMM may allow an escalation of privilege. The attack requires a privileged user, high complexity, and special internal knowledge, but no user interaction. The vulnerability impacts confidentiality and integrity (high), with no impact on availability.
Risk Assessment
An attacker with privileged local access can gain elevated privileges, potentially leading to confidentiality and integrity breaches. However, the attack requires high complexity.
Recommendation
It is recommended to update Intel Xeon 6 processor microcode to the latest version. Also monitor vendor advisories for this vulnerability.
Original NVD description (English source)
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.