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Aptio VOperating system · Ami

CVE-2025-33043

MEDIUM · 6.1 CVSS v3.1 Published 2025-05-29
Fix available
A fix is available. Upgrade to 5.011 or later.
See remediation →
63/100
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
APTIOV contains a vulnerability in BIOS where an attacker may cause an Improper Input Validation locally. Successful exploitation of this vulnerability can potentially impact of integrity.

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

APTIOV (American Megatrends firmware) contains an improper input validation vulnerability in BIOS that allows a local attacker to potentially impact system integrity. The vulnerability requires local access to exploit and involves insufficient validation of input within the BIOS firmware, which could allow an attacker to modify BIOS settings or memory.

MitigationApply the vendor-provided BIOS firmware update from the system manufacturer (OEM) that addresses this vulnerability. Verify BIOS integrity and ensure only authorized personnel have local physical access to the system.

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
Aptio VOperating system
Affected:>= 5.0, < 5.011

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
Low
Integrity
High
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/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 installed BIOS version
    Use system utilities to read the BIOS version: On Linux, run `sudo dmidecode -s bios-version` or check `/sys/class/dmi/id/bios_version`. On Windows, run `wmic bios get SMBIOSBIOSVersion` or check System Information (msinfo32). On UEFI systems, enter setup and view the BIOS/UEFI version information.
    Affected if The reported version falls within the range 5.0 to 5.010.x (any version >= 5.0 but < 5.011)
  2. Confirm the BIOS vendor is American Megatrends
    Check the BIOS vendor information: On Linux, run `sudo dmidecode -s bios-vendor`. On Windows, run `wmic bios get Manufacturer`. Verify the vendor is listed as American Megatrends, AMI, or a system manufacturer using AMI Aptio V firmware.
    Affected if The vendor is American Megtrends (AMI) or an OEM using Aptio V firmware and the version meets the affected range condition
  3. Verify physical access scope
    Assess whether unauthorized or uncontrolled local physical access to the system is possible. This is a prerequisite for exploitation, as the attacker needs local access to interact with BIOS settings.
    Affected if Unrestricted local physical access exists and the BIOS version is in the affected range

The system is affected if the installed American Megatrends Aptio V BIOS version is 5.0 or higher but lower than 5.011, and the attacker has local physical access to the system.

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
Upgrade available Upgrade to 5.011 or later
Fixed in 5.011
Interim mitigation

Apply the vendor-provided BIOS firmware update from the system manufacturer (OEM) that addresses this vulnerability. Verify BIOS integrity and ensure only authorized personnel have local physical access to the system.

Recommended fix High confidence

Aptio V 5.011 or later

  1. Identify the system vendor (OEM) that manufactured the device containing the affected Aptio V BIOS
  2. Contact the system vendor to obtain the BIOS/firmware update that includes Aptio V version 5.011 or later
  3. Download the BIOS update from the vendor's support website for your specific system model
  4. Follow the vendor's instructions to apply the BIOS/firmware update (typically requires rebooting the system and entering BIOS setup or using a firmware update utility)
Caveat BIOS updates carry a risk of system instability if interrupted; ensure stable power and follow vendor update procedures exactly

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

Fix this in Aptio V Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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Scan for this in your stack

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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-2025-33043 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