Input Validation Flaw in UEFI Firmware of Intel Platforms
CVE-2025-20105

8.7HIGH

Key Information:

Vendor

Intel
Status
Intel(r) Reference Platforms May Allow An Escalation Of Privilege. System Software Adversary With A Privileged User Combined With A Low Complexity Attack May Enable Local Code Execution. This Result May Potentially Occur Via Local Access When Attack Requirements Are Present Without Special Internal Knowledge And Requires No User Interaction. The Potential Vulnerability May Impact The Confidentiality (high), Integrity (high) And Availability (high) Of The Vulnerable System, Resulting In Subsequent System Confidentiality (high), Integrity (high) And Availability (high) Impacts.
Vendor
CVE Published:
10 March 2026

What is CVE-2025-20105?

A vulnerability exists in the UEFI firmware SMM module across certain Intel reference platforms, stemming from improper input validation. This could allow an attacker with privileged access to execute local code by leveraging a low-complexity attack that requires no special internal knowledge or user interaction. The implications of this flaw may significantly compromise the confidentiality, integrity, and availability of the affected systems, necessitating immediate attention from users and administrators.

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Affected Version(s)

Intel(R) reference platforms may allow an escalation of privilege. System software adversary with a privileged user combined with a low complexity attack may enable local code execution. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (high) impacts. See references

References

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

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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