Back to Database
Status published
High
CVE-2023-31100
Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™...
Vulnerability Description
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
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-31100
Credits & Attribution
No credits recorded in the NVD database.
More from Phoenix
View All →CVE-2024-29980
Unsafe Handling of IHV UEFI Variables
Medium
4.6
CVE-2024-29979
Unsafe Handling of Phoenix UEFI Variables
Medium
4.6
CVE-2024-1598
Potential buffer overflow when handling UEFI variables
High
7.5
CVE-2024-12533
Improper Check for Unusual or Exceptional Conditions vulnerability in Phoenix...
Low
3.3
CVE-2024-0762
Potential buffer overflow when handling UEFI variables
High
7.5
Affected Vendor
Phoenix
View all reports →Affected Software
SecureCore™ Technology™ 4
Vulnerable Versions:
4.3.0.0, 4.3.1.0, 4.4.0.0, 4.5.0.0
Timeline
Official Publish:
November 14th, 2023
Last Modified:
July 28th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H