CVE-2023-31100

Published Nov 14, 2023 CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed
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

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2023-35428 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
History
Type Values Removed Values Added
First Time appeared Phoenixtech
Phoenixtech securecore Technology
CPEs cpe:2.3:o:phoenix:securecore_technology:*:*:*:*:*:*:*:* cpe:2.3:o:phoenixtech:securecore_technology:*:*:*:*:*:*:*:*
Vendors & Products Phoenix
Phoenix securecore Technology
Phoenixtech
Phoenixtech securecore Technology
Type Values Removed Values Added
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 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
References
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Phoenix
Published
Updated
Jul 28, 2025, 8:48 PM
Reserved
Apr 24, 2023, 6:17 AM
Status
Analyzed
Published
Nov 15, 2023, 12:15 AM
Modified
Jun 17, 2026, 5:56 AM