CVE-2023-31100 json
Improper Access Control in SMI handler vulnerability in Phoenix SecureCore™ Technology™ 4 allows SPI flash modification.
published 2023-11-14 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-35428
- cvss
- 8.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
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
Patch / fix
- Phoenix SecureCore™ Technology™ 4 4.3.0.203, 4.3.1.163, 4.4.0.217, 4.5.0.138
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.4 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H |
| NVD | 3.1 | 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
Affected products
- Phoenix SecureCore™ Technology™ 4
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
phoenixtech.com
/phoenix-security-notifications/cve-2023-31100/
vendor-advisory
-
phoenix.com
/security-notifications/
not-applicable
Sources
- CVE List CVE-2023-31100
- NVD CVE-2023-31100
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