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Ryzen 3 5100 FirmwareOperating system · Amd

CVE-2023-20571

HIGH · 8.1 CVSS v3.1 Published 2023-11-14
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
90/100
Remediation priority · Urgent
Remotely reachable No privileges 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
A race condition in System Management Mode (SMM) code may allow an attacker using a compromised user space to leverage CVE-2018-8897 potentially resulting in privilege escalation.

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 · high confidence

A race condition exists in System Management Mode (SMM) code that allows a user-space attacker with a compromised process to exploit the vulnerability documented in CVE-2018-8897. This enables privilege escalation from user mode to highly privileged SMM, which operates below the operating system and has full hardware access.

MitigationApply vendor-provided BIOS/UEFI firmware updates that address this vulnerability. Organizations should identify affected hardware models and work with original equipment manufacturers to obtain and deploy patched firmware versions.

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 5100 FirmwareOperating system
Affected:< comboam4v2_1.2.0.b
Ryzen 3 5300g FirmwareOperating system
Affected:< comboam4v2_1.2.0.b
Ryzen 3 5300ge FirmwareOperating system
Affected:< comboam4v2_1.2.0.b
Ryzen 5 5500 FirmwareOperating system
Affected:< comboam4v2_1.2.0.b
Ryzen 5 5600g FirmwareOperating system
Affected:< comboam4v2_1.2.0.b
Ryzen 5 5600ge FirmwareOperating system
Affected:< comboam4v2_1.2.0.b
Ryzen 7 5700 FirmwareOperating system
Affected:< comboam4v2_1.2.0.b
Ryzen 7 5700g FirmwareOperating system
Affected:< comboam4v2_1.2.0.b

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
Network
Complexity
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/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 your AMD Ryzen processor model
    On Linux, run: cat /proc/cpuinfo | grep 'model name' or lscpu | grep 'Model name'. On Windows, run: wmic cpu get name. On Mac: sysctl machdep.cpu.brand_string
    Affected if The processor is one of: Ryzen 3 5100, Ryzen 3 5300g, Ryzen 3 5300ge, Ryzen 5 5500, Ryzen 5 5600g, Ryzen 5 5600ge, Ryzen 7 5700, or Ryzen 7 5700g
  2. Check BIOS vendor and version
    On Linux, run: sudo dmidecode -s bios-version. On Windows, run: wmic bios get smbiosbiosversion. On some systems, the BIOS version is displayed during the boot process or in the BIOS/UEFI setup utility (press Delete or F2 at startup)
    Affected if The firmware version displayed is less than comboam4v2_1.2.0.b, or the version cannot be determined and the processor model matches the affected list
  3. Check BIOS vendor and date
    On Linux, run: sudo dmidecode -s bios-vendor and sudo dmidecode -s bios-release-date. On Windows, run: wmic bios get manufacturer,releaseDate
    Affected if The processor is an affected Ryzen model AND the firmware version is below comboam4v2_1.2.0.b, or the version cannot be verified but the processor model is on the affected list. This is a firmware-level vulnerability that requires checking the UEFI/BIOS version provided by the motherboard or system

A system is affected if it uses one of the listed AMD Ryzen processors with firmware versions prior to comboam4v2_1.2.0.b, since the vulnerability exists in the System Management Mode firmware and cannot be mitigated through software patches.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor-provided BIOS/UEFI firmware updates that address this vulnerability. Organizations should identify affected hardware models and work with original equipment manufacturers to obtain and deploy patched firmware versions.

Recommended fix Moderate confidence

comboam4v2_1.2.0.b or later

  1. Identify the current firmware version of the AMD Ryzen system by accessing BIOS/UEFI settings or using system information tools
  2. Contact the system manufacturer (OEM) or motherboard vendor to obtain the firmware update containing comboam4v2_1.2.0.b or later
  3. Apply the firmware update through the vendor's recommended BIOS/UEFI flashing process
  4. After updating, verify the firmware version has been upgraded to comboam4v2_1.2.0.b or later to confirm the vulnerability is remediated
Caveat Firmware updates carry some risk of system instability; follow vendor instructions carefully and ensure stable power during the update process

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Ryzen 3 5100 Firmware Scoped from the published advisory
  • Consultation8.0 h
  • Implementation16.0 h
  • Testing8.0 h
  • Review / QA4.0 h
36.0 hours of engineering $6,400
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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-2023-20571 in production — separate from our analysis above.

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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