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CVE-2023-31100

19
FAUCET Score

CVE-2023-31100 is an improper access control vulnerability in Phoenix SecureCore Technology 4, affecting versions 4.3.0.0 through 4.5.0.138, that allows unauthorized modification of the SPI flash. With a CVSS score of 7.1 (HIGH), this vulnerability can be exploited locally with low complexity to achieve high integrity and availability impacts. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.3.0.0, < 4.3.0.203CPE matchmatch criteria
cpe:2.3:o:phoenixtech:securecore_technology:*:*:*:*:*:*:*:*
>= 4.3.1.0, < 4.3.1.163CPE matchmatch criteria
cpe:2.3:o:phoenixtech:securecore_technology:*:*:*:*:*:*:*:*
>= 4.4.0.0, < 4.4.0.217CPE matchmatch criteria
cpe:2.3:o:phoenixtech:securecore_technology:*:*:*:*:*:*:*:*
>= 4.5.0.0, < 4.5.0.138CPE matchmatch criteria
cpe:2.3:o:phoenixtech:securecore_technology:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.4HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.19%
Probability of exploitation in next 30 days
EPSS Percentile
8.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 33rd percentile among its peer group of 17,061 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

phoenixtech.com / phoenix-security-notifications/cve-2023-31100
Vendor Advisory
phoenix.com / security-notifications
Not Applicable