CVE-2023-31100
highpriority · track · 28EPSS 0.002 · 9 %ileEUUSEPSS · scored 2026-10-28
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
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.4
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (8)
Products and version ranges known to be affected.
- phoenixtech securecore technology4.3.0.0 → 4.3.0.203nvdUScpe:2.3:o:phoenixtech:securecore_technology:*:*:*:*:*:*:*:*
- phoenixtech securecore technology4.3.1.0 → 4.3.1.163nvdUScpe:2.3:o:phoenixtech:securecore_technology:*:*:*:*:*:*:*:*
- phoenixtech securecore technology4.4.0.0 → 4.4.0.217nvdUScpe:2.3:o:phoenixtech:securecore_technology:*:*:*:*:*:*:*:*
- phoenixtech securecore technology4.5.0.0 → 4.5.0.138nvdUScpe:2.3:o:phoenixtech:securecore_technology:*:*:*:*:*:*:*:*
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (6)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2023-31100/cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2023-31100cnnvd
- https://www.phoenix.com/security-notifications/cnnvd
- https://phoenixtech.com/phoenix-security-notifications/cve-2023-31100/enisa_euvd
- https://phoenixtech.com/phoenix-security-notifications/cve-2023-31100/Vendor Advisorynvd
- https://www.phoenix.com/security-notifications/Not Applicablenvd
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