CVSS 3.1 Score 7.1 of 10 (high)


Published Nov 15, 2023
Updated: Feb 1, 2024
CWE ID 284


The vulnerability with CVE ID CVE-2023-31100 is an Improper Access Control issue in the SMI handler of Phoenix SecureCore™ Technology™ 4. This vulnerability affects SecureCore™ Technology™ 4 versions ranging from to The potential danger posed by this vulnerability is high, with a base severity rating of HIGH and an impact score of 5.2 out of 10. It requires low privileges and no user interaction for exploitation, and it has a local attack vector, which means an attacker needs access to the affected system to exploit it. The vulnerability allows for SPI flash modification, which could potentially lead to unauthorized access or tampering of system firmware. To remediate this vulnerability, it is recommended to update the affected SecureCore™ Technology™ 4 versions to at least version,,, or or higher if available.

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