CVE-2025-31936: Escalation of Privilege in Intel(R) Xeon(R) 6 processors when using Intel(R) TDX
CVE-2025-31936 is a high-severity vulnerability affecting some Intel Xeon 6 processors when using Intel TDX. It involves improper handling of overlapping protected memory ranges within System Management Mode (SMM), potentially allowing escalation of privilege. Exploitation requires a privileged user with local access and high attack complexity, leveraging special internal knowledge. The vulnerability impacts confidentiality and integrity of the system but does not affect availability. No user interaction is required for exploitation.
AI Analysis
Technical Summary
This vulnerability arises from improper handling of overlapping protected memory ranges in certain Intel Xeon 6 processors using Intel TDX within SMM. A local attacker with privileged user access and specialized internal knowledge may exploit this flaw to escalate privileges. The attack complexity is high, and no user interaction is needed. The vulnerability primarily affects confidentiality and integrity of the system, with no impact on availability. There is no vendor advisory or patch information currently available.
Potential Impact
The vulnerability may allow an attacker with privileged user access and local presence to escalate privileges, compromising system confidentiality and integrity. Availability is not impacted. The CVSS 4.0 base score is 7.0, reflecting high severity due to the potential confidentiality and integrity impacts combined with high attack complexity and required privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or mitigation is currently documented. Due to the high complexity and required privileged access, immediate exploitation risk is limited, but monitoring vendor communications for updates is recommended.
CVE-2025-31936: Escalation of Privilege in Intel(R) Xeon(R) 6 processors when using Intel(R) TDX
Description
CVE-2025-31936 is a high-severity vulnerability affecting some Intel Xeon 6 processors when using Intel TDX. It involves improper handling of overlapping protected memory ranges within System Management Mode (SMM), potentially allowing escalation of privilege. Exploitation requires a privileged user with local access and high attack complexity, leveraging special internal knowledge. The vulnerability impacts confidentiality and integrity of the system but does not affect availability. No user interaction is required for exploitation.
CVSS v4.0
Score 7.0high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from improper handling of overlapping protected memory ranges in certain Intel Xeon 6 processors using Intel TDX within SMM. A local attacker with privileged user access and specialized internal knowledge may exploit this flaw to escalate privileges. The attack complexity is high, and no user interaction is needed. The vulnerability primarily affects confidentiality and integrity of the system, with no impact on availability. There is no vendor advisory or patch information currently available.
Potential Impact
The vulnerability may allow an attacker with privileged user access and local presence to escalate privileges, compromising system confidentiality and integrity. Availability is not impacted. The CVSS 4.0 base score is 7.0, reflecting high severity due to the potential confidentiality and integrity impacts combined with high attack complexity and required privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or mitigation is currently documented. Due to the high complexity and required privileged access, immediate exploitation risk is limited, but monitoring vendor communications for updates is recommended.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- intel
- Date Reserved
- 2025-04-10T03:00:30.747Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7b5466bf8831d539106816
Added to database: 08/11/2026, 16:57:10 UTC
Last enriched: 08/12/2026, 00:26:32 UTC
Last updated: 08/12/2026, 01:31:04 UTC
Views: 3
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