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Ryzen 3 3100 FirmwareOperating system · Amd

CVE-2023-20597

MEDIUM · 5.5 CVSS v3.1 Published 2023-09-20
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
57/100
Remediation priority · Elevated
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 initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via local access.

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 initialization of variables in a UEFI DXE (Driver Execution Environment) driver can cause sensitive data to remain in memory after use. A privileged local user could potentially access this uncleared data, leading to information disclosure.

MitigationApply the vendor-provided firmware update that corrects the variable initialization in the affected DXE driver. In enterprise environments, prioritize patching server and workstation systems that support privileged local access.

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
Ryzen 3 3100 FirmwareOperating system
Affected:= comboam4pi_1.0.0.9= comboam4v2pi_1.2.0.8
Ryzen 3 3200g FirmwareOperating system
Affected:= comboam4pi_1.0.0.9= comboam4v2pi_1.2.0.8
Ryzen 3 3200ge FirmwareOperating system
Affected:= comboam4pi_1.0.0.9= comboam4v2pi_1.2.0.8
Ryzen 3 3200u FirmwareOperating system
Affected:= comboam4pi_1.0.0.9= comboam4v2pi_1.2.0.8
Ryzen 3 3250c FirmwareOperating system
Affected:= comboam4pi_1.0.0.9= comboam4v2pi_1.2.0.8
Ryzen 3 3250u FirmwareOperating system
Affected:= comboam4pi_1.0.0.9= comboam4v2pi_1.2.0.8
Ryzen 3 3300 FirmwareOperating system
Affected:= comboam4pi_1.0.0.9= comboam4v2pi_1.2.0.8
Ryzen 3 3300g FirmwareOperating system
Affected:= comboam4pi_1.0.0.9= comboam4v2pi_1.2.0.8

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
None
Availability
None

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

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 the processor model
    Use system information tools (such as 'lscpu' on Linux, CPU-Z on Windows, or check BIOS/UEFI settings) to confirm the exact AMD Ryzen 3 processor model. Match against the list: Ryzen 3 3100, 3200g, 3200ge, 3200u, 3250c, 3250u, 3300, or 3300g.
    Affected if The processor is NOT one of these eight Ryzen 3 models, then the system is not affected by this specific CVE.
  2. Retrieve UEFI firmware version
    Access the UEFI/BIOS setup menu during boot (typically by pressing Del, F2, or F12) and navigate to the 'BIOS Version' or 'Firmware Version' section. Alternatively, use system information tools like 'dmidecode' on Linux or 'wmic' on Windows to query firmware information. Look for a firmware version string containing either 'comboam4pi' or 'comboam4v2pi'.
    Affected if No firmware version string containing 'comboam4pi' or 'comboam4v2pi' is found, then the system likely uses a different firmware baseline and may not be affected.
  3. Compare firmware version to affected releases
    Match the numeric portion of the firmware version string: if it shows '1.0.0.9' (for comboam4pi) or '1.2.0.8' (for comboam4v2pi), the system matches the exact affected versions listed in the advisory.
    Affected if The firmware version exactly equals 'comboam4pi_1.0.0.9' or 'comboam4v2pi_1.2.0.8', then the system is running an affected firmware version and is vulnerable.
  4. Verify UEFI DXE driver presence
    This vulnerability exists in a specific UEFI DXE driver within the firmware. The presence of the vulnerable driver cannot be directly verified without vendor diagnostic tools or firmware analysis. The check relies on version matching in step 3.
    Affected if This is a structural requirement: if the UEFI firmware contains the vulnerable DXE driver (implied by matching the affected version), the information disclosure condition exists.
  5. Confirm local privileged access context
    This vulnerability requires a privileged local user to access uncleared memory. Check system user accounts and permissions to determine if non-admin or standard users could potentially be elevated, or if the system is multi-user with varying privilege levels.
    Affected if The system has only a single administrator account with no other local users, the attack surface for exploitation is reduced, though the firmware vulnerability still exists.

A system is affected if it contains an AMD Ryzen 3 processor from the list and runs UEFI firmware version comboam4pi_1.0.0.9 or comboam4v2pi_1.2.0.8, enabling a privileged local user to access sensitive data remaining in memory after use.

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 the vendor-provided firmware update that corrects the variable initialization in the affected DXE driver. In enterprise environments, prioritize patching server and workstation systems that support privileged local access.

Fix this in Ryzen 3 3100 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA3.0 h
21.0 hours of engineering $3,680
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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-2023-20597 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