CVE-2023-39536
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 · uneditedAMI AptioV contains a vulnerability in BIOS where an Attacker may use an improper input validation via the local network. A successful exploit of this vulnerability may lead to a loss of confidentiality, 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 confidenceAMI AptioV BIOS contains an improper input validation vulnerability that can be exploited via the local network. An attacker with local network access could exploit this to compromise the BIOS firmware, potentially achieving code execution at the most privileged level. This could result in complete loss of confidentiality, integrity, and availability of the affected 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 dataall versionsCVSS 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 BIOS vendor and versionRun 'dmidecode -s bios-version' or check the system BIOS information screen during boot or in the UEFI/BIOS setup menuAffected if The BIOS is identified as AMI AptioV and the version matches any release of that firmware (all versions are affected)
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Confirm the BIOS firmware vendorRun 'dmidecode -s bios-vendor' or check system documentation to identify the BIOS providerAffected if The BIOS vendor is American Megatrends (AMI) with AptioV firmware
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Determine if network-accessible management interfaces are enabledCheck the BIOS/UEFI settings for IPMI, Intel AMT, vPro, or other out-of-band management features. On Linux, run 'dmidecode' or check system logs for BMC/IPMI presenceAffected if Remote management interfaces (IPMI, AMT, etc.) are enabled and accessible on the network, as the vulnerability is exploitable via local network access
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Assess network exposure of management interfacesReview network configuration and firewall rules to determine if management ports (typically 623/UDP, 16992-16995/TCP for IPMI/AMT) are exposed beyond the local network segmentAffected if The system or its management interfaces are reachable from network segments beyond the trusted local network
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Review system integrity and firmware logsCheck TCG2 event logs via 'tpm2_geteventlog' or BIOS firmware integrity measurements, and review any available BMC/IPMI event logs for unexpected commands or authentication attemptsAffected if Firmware integrity checks show unexpected changes or logs contain suspicious authentication or configuration events
A system is affected if it runs AMI AptioV firmware (all versions) and has network-accessible management interfaces exposed, particularly when those interfaces can be reached from the local network where an attacker could send specially crafted input.
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.
From vendor dataApply the vendor-supplied BIOS/firmware update from the system manufacturer. If no update is available, restrict network access to affected systems and monitor for indicators of compromise.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-39536 — 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-2023-39536 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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