Escalation of Privilege Vulnerability in Intel Processor Family
CVE-2025-31648

1.8LOW

Key Information:

Vendor

Intel
Status
Intel(r) Processor Family May Allow An Escalation Of Privilege. Startup Code And 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 (low), Integrity (low) And Availability (none) Of The Vulnerable System, Resulting In Subsequent System Confidentiality (low), Integrity (low) And Availability (none) Impacts.
Vendor
CVE Published:
10 February 2026

What is CVE-2025-31648?

The vulnerability is triggered through improper handling of values within the microcode flow of the Intel Processor Family. Attackers with privileged access and specific internal knowledge may exploit this flaw to escalate privileges without requiring user interaction. While the immediate impact on system confidentiality and integrity is low, this vulnerability poses significant risks by enabling unauthorized access under specific, high-complexity conditions. Organizations using affected Intel processors should review security advisories for mitigation strategies.

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Affected Version(s)

Intel(R) Processor Family may allow an escalation of privilege. Startup code and 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 (low), integrity (low) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (low), integrity (low) and availability (none) impacts. See references

References

https://intel.com/content/www/us/en/security-center/advis...

CVSS V4

Score:
1.8
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Local
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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