CVE-2022-40242
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 · uneditedMegaRAC Default Credentials Vulnerability
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 confidenceMegaRAC Baseboard Management Controller (BMC) firmware contains hardcoded default credentials that allow unauthenticated remote administrative access when exploited over network interfaces.
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= 12= 13CVSS 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
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/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 checksWork through these to decide whether this CVE applies to you.
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Identify the BMC firmware in useQuery the BMC via IPMI, Redfish, or the vendor management interface to retrieve the firmware vendor and version information. Look for 'MegaRAC', 'Ami Megarac', or 'American Megatrends' in the firmware details.Affected if The BMC firmware is identified as MegaRAC from American Megatrends
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Check the BMC firmware versionRetrieve the exact firmware version string from the BMC inventory or firmware metadata. Compare it to the affected versions: 12 or 13.Affected if The installed version is exactly 12 or exactly 13
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Verify remote administrative access is enabledCheck the BMC network configuration to determine if remote management protocols (IPMI over LAN, Web UI, Redfish, SSH) are enabled on accessible network interfaces.Affected if Remote administrative interfaces are exposed on network-accessible IPs
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Test for default credential acceptanceAttempt authentication to the BMC management interface using known default credential pairs for MegaRAC (such as admin/admin, ADMIN/ADMIN, or root/root). Document whether any default credential grants access.Affected if Any default administrative credential successfully authenticates
You are affected if your system runs MegaRAC BMC firmware version 12 or 13 AND remote management is accessible AND default credentials have not been changed.
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 dataImmediately change all default administrative credentials on affected BMCs, disable remote administrative access if not required, and place BMC management networks in isolated segments.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-40242 — 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-2022-40242 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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