dbcve.org
Securecore TechnologyOperating system · Phoenixtech

CVE-2023-5058

HIGH · 7.8 CVSS v3.1 Published 2023-12-07
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
80/100
Remediation priority · High
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Improper Input Validation in the processing of user-supplied splash screen during system boot in Phoenix SecureCore™ Technology™ 4 potentially allows denial-of-service attacks or arbitrary code execution.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Improper input validation in the splash screen processing functionality of Phoenix SecureCore™ Technology™ 4 firmware allows malicious or malformed user-supplied splash screen data to trigger denial-of-service conditions or potentially achieve arbitrary code execution during the system boot process.

MitigationApply vendor-released firmware updates for Phoenix SecureCore™ Technology™ 4; until a patch is available, disable user-supplied custom splash screens and use only vendor-default or cryptographically verified images.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Securecore TechnologyOperating system
Affected:= 4.*

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Phoenix SecureCore firmware version
    Check system UEFI/BIOS firmware version information through system information utilities or by accessing the BIOS setup utility during boot. Look for 'Phoenix SecureCore Technology' or 'Phoenixtech' in the firmware identification.
    Affected if The system runs Phoenix SecureCore Technology firmware version 4.x (any 4.* version)
  2. Verify splash screen configuration in UEFI settings
    Access the UEFI/BIOS configuration menu and locate splash screen, boot logo, or custom boot image settings. Determine whether custom or user-supplied splash screen images are enabled or configured.
    Affected if Custom or user-supplied splash screens are enabled or configured in the firmware settings

The system is vulnerable if it runs Phoenix SecureCore Technology version 4.x AND has custom user-supplied splash screen functionality enabled or configured.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor-released firmware updates for Phoenix SecureCore™ Technology™ 4; until a patch is available, disable user-supplied custom splash screens and use only vendor-default or cryptographically verified images.

Fix this in Securecore Technology Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing8.0 h
  • Review / QA4.0 h
30.0 hours of engineering $5,280
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-5058 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data