CVE-2025-33044
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 · uneditedAPTIOV contains a vulnerability in BIOS where an attacker may cause an Improper Restriction of Operations within the Bounds of a Memory Buffer by local means. Successful exploitation of this vulnerability may lead to memory corruption and impact Integrity and Availability.
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 confidenceAPTIOV BIOS contains a memory buffer bounds restriction vulnerability (CWE-119) that allows a local attacker to cause improper memory operations, leading to memory corruption. Successful exploitation impacts system integrity and availability by allowing arbitrary memory writes or corruption.
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>= 5.0, < 5.041CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Identify the installed BIOS versionOn Linux, run 'sudo dmidecode -s bios-version' or 'sudo dmidecode | grep -A5 "BIOS Information"'. On Windows, run 'wmic bios get SMBIOSBIOSVersion' or open System Information (msinfo32) and look for BIOS Version/Date.Affected if The displayed version corresponds to Ami Aptio V firmware.
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Confirm the BIOS vendor is American Megatrends (AMI)On Linux, run 'sudo dmidecode -s bios-vendor'. On Windows, run 'wmic bios get Manufacturer' or check the BIOS setup utility main page.Affected if The vendor is listed as American Megatrends, AMI, or the BIOS is identified as Aptio V.
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Compare the full version string to the vulnerable rangeExtract the exact version number from the BIOS (e.g., 5.00, 5.02, 5.040). Compare numerically against the vulnerable range: version >= 5.0 AND version < 5.041.Affected if The BIOS version is 5.0, 5.01, 5.02, 5.03, 5.04, 5.040, or any version in between 5.0 and 5.040.x.
Your system is affected if the installed AMI Aptio V BIOS firmware version is 5.0 or higher but lower than 5.041.
Generated from the published advisory. Verify against your own configuration.
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 · scoped5.041
Apply vendor-provided BIOS/firmware updates from American Megatrends (AMI) to patch the vulnerability. Restrict physical access to systems and verify secure boot configurations are enabled.
Aptio V 5.041 or later
- Identify the current Aptio V BIOS version installed on the affected system
- Download the Aptio V firmware update version 5.041 or later from the system vendor or AMI (American Megatrends) support portal
- Follow the vendor's standard BIOS/firmware update procedure, which typically involves running the firmware update utility or flashing the BIOS from within the operating system
- Reboot the system to complete the firmware update process
- Verify the updated BIOS version is 5.041 or higher after the update
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-33044 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-33044 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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