CVE-2021-27445
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 has insecure file permissions that could be exploited to escalate privileges on 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 contains insecure file permissions that allow local users to modify files they should not have access to, enabling privilege escalation to higher permission levels on 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
- 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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Verify AmegaView versionDetermine the installed AmegaView version through the device web UI, system information page, or version file on the deviceAffected if Version is 3.0 or lower (the device is within the affected range)
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Identify critical system files and directoriesLocate important system binaries, configuration files, and sensitive data directories on the AmegaView deviceAffected if The device contains system binaries or configuration files that could be targeted for modification
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Check file permissions on configuration filesInspect file permissions on configuration files using appropriate file system commands or tools - look for files with world-writable or group-writable permissionsAffected if Configuration files are world-writable or can be modified by low-privilege users
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Check file permissions on system binariesExamine permissions on system executables and binaries - verify if low-privilege users can write or modify these filesAffected if System binaries are writable by non-privileged users
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Check for privilege escalation pathsLook for scripts, configuration files, or executables that low-privilege users can modify and that are executed with elevated privilegesAffected if Low-privilege users can modify files that are executed with higher privileges
A user is affected if the AmegaView version is 3.0 or lower AND critical system files or configuration files have overly permissive access controls allowing modification by low-privilege local users.
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 dataReview and correct file permissions on the AmegaView device to follow least-privilege principles, ensuring critical system files and configuration files are not world-writable or modifiable by low-privilege users.
- Consultation3.0 h
- Implementation2.0 h
- Testing3.0 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 $2,832.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-27445 — 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-2021-27445 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
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