CVE-2023-31100

7.1 highEPSS 0.2%

High (7.1) in phoenixtech securecore technology. EPSS 0.2% chance of exploitation in the next 30 days.

Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™ Technology™ 4 allows SPI flash modification. This issue affects SecureCore™ Technology™ 4: * from 4.3.0.0 before 4.3.0.203 * from 4.3.1.0 before 4.3.1.163 * from 4.4.0.0 before 4.4.0.217 * from 4.5.0.0 before 4.5.0.138

Severity

CVSS 3.1

7.1 high

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-31)
CWE: CWE-284
Published: 2023-11-15
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

phoenixtech:securecore_technology

References

https://phoenixtech.com/phoenix-security-notifications/cve-2023-31100/
https://www.phoenix.com/security-notifications/

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