CVE-2021-27193
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 · uneditedIncorrect default permissions vulnerability in the API of Netop Vision Pro up to and including 9.7.1 allows a remote unauthenticated attacker to read and write files on the remote machine with system privileges resulting in a privilege escalation.
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 · high confidenceNetop Vision Pro versions up to 9.7.1 contain an API with insecure default permissions that allows any remote unauthenticated attacker to interact with the API and perform privileged file operations. This grants the attacker SYSTEM-level access to read and write arbitrary files on the target machine, effectively enabling complete remote code execution and privilege escalation.
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<= 9.7.1CVSS 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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Verify Netop Vision Pro is installedCheck for Netop Vision Pro in the list of installed programs. On Windows, open Control Panel > Programs and Features, or run: reg query 'HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall' /s | findstr -i 'Netop Vision'Affected if Netop Vision Pro appears in installed programs list
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Determine the installed versionOpen the Vision Pro application and navigate to Help > About, or check the executable properties: right-click the Vision Pro executable (typically in C:\Program Files\Netop\Vision Pro\) and view Version infoAffected if Version number is 9.7.1 or lower (any version up to and including 9.7.1)
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Verify the Vision API service is enabledOpen Windows Services (services.msc) and look for Netop Vision services, or check for the Vision API process listening on typical ports (TCP 20020-20021 or similar). Run: netstat -an | findstr '200'Affected if The Netop Vision API service is running and accepting connections
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Check network exposure of the Vision APIRun: netstat -an | findstr 'LISTENING' to identify ports the Vision API binds to, then verify if these ports are exposed externally or accessible from untrusted networksAffected if The API ports are bound to 0.0.0.0 (all interfaces) or are accessible from outside trusted network segments
A system is affected if Netop Vision Pro version 9.7.1 or lower is installed with the vulnerable API component enabled and network-accessible.
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 Netop Vision Pro to the latest version beyond 9.7.1 which contains the corrected default permissions. If immediate patching is not feasible, restrict network exposure of the Vision Pro API to trusted networks and implement additional access controls.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-27193 — 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-2021-27193 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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