CVE-2023-31100
Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™ Technology™ 4 allows...
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
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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
- Record
CVE-2023-31100- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H - Weakness
- CWE-284
- Updated
- 2026-11-02
EUVDEUVD-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
- Record
EUVD-2023-35428- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-h3cr-gxpm-fxxc
Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™ Technology™ 4 allows...
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
- Record
GHSA-h3cr-gxpm-fxxc- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H - Weakness
- CWE-284
- Updated
- 2026-11-02
NVD
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
- Record
CVE-2023-31100- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H - 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 - Weakness
- CWE-284
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-31100 is a high vulnerability (CVSS 8.4) in Phoenix Securecore™ Technology™ 4, published November 14, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.19%, the 8th percentile. No source names a fixed version.