CVE-2021-27451
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 · uneditedMesa Labs AmegaView Versions 3.0 and prior’s passcode is generated by an easily reversible algorithm, which may allow an attacker to gain access to the device.
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 confidenceMesa Labs AmegaView Versions 3.0 and prior uses a weak, reversible algorithm to generate device passcodes. An attacker who discovers the algorithm can calculate valid passcodes and gain unauthorized administrative access to the device.
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<= 3.0CVSS 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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Confirm AmegaView installationIdentify if the Mesa Labs AmegaView software or device is present in your environment. Check for the AmegaView application or associated device on your network.Affected if The product AmegaView is present in the environment
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Determine installed versionLocate the installed AmegaView version information. This is typically found in the application itself (Help > About), the device system information, or documentation. Compare the version number to the affected range.Affected if The installed version is 3.0 or lower
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Review user accounts for unauthorized administrative accessAccess the AmegaView administrative interface and review the list of user accounts with administrative privileges. Look for unexpected or unknown admin accounts that may indicate unauthorized access.Affected if Unknown or unexpected administrative user accounts exist in the system
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Audit authentication logs for suspicious activityReview AmegaView authentication and access logs for signs of unauthorized administrative logins, especially from unfamiliar IP addresses or at unusual times.Affected if Authentication logs show administrative access from unrecognized sources or at unexpected times
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Inspect network traffic for credential exposureMonitor network traffic to and from the AmegaView device for plaintext passcode transmission or patterns consistent with the weak reversible algorithm being exploited.Affected if Network captures reveal passcodes transmitted in a reversible or predictable format
The environment is affected if AmegaView version 3.0 or prior is installed, and the weak reversible passcode algorithm has not been addressed through vendor update or compensating controls.
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 dataUpgrade to a version beyond 3.0 that implements proper cryptographic passcode generation. If no update is available, isolate the device on a restricted network segment and monitor for unauthorized access attempts.
- Consultation6.0 h
- Implementation20.0 h
- Testing10.0 h
- Review / QA5.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $11,520.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-27451 — 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-2021-27451 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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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.
- 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