CVE-2020-7867
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 · uneditedAn improper input validation vulnerability in Helpu solution could allow a local attacker to arbitrary file creation and execution without click file transfer menu. It is possible to file in arbitrary directory for user because the viewer program receive the file from agent with privilege of administrator.
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 confidenceThis vulnerability in Helpu solution allows a local attacker to achieve arbitrary file creation and execution without user interaction through the file transfer menu. The viewer program accepts files from an agent component running with administrator privileges without proper input validation, enabling files to be placed in arbitrary directories on the 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 data= 2018.5.21.0CVSS 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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Identify Helpuviewer installationSearch for Helpuviewer executable or check program files for Helpu Helpuviewer directory. Common paths: C:\Program Files\Helpu\ or C:\Program Files (x86)\Helpu\Affected if Helpuviewer is installed on the system
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Determine installed versionRight-click the Helpuviewer executable, select Properties, then view the Details tab for File Version. Alternatively, run: Get-Item 'C:\Program Files\Helpu\Helpuviewer.exe' | Select-Object VersionInfoAffected if Version equals exactly 2018.5.21.0
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Verify file transfer feature is enabledCheck Helpuviewer configuration files or settings menu for file transfer functionality. Look for settings related to file reception, file transfer, or agent communication.Affected if File transfer or file reception feature is configured or enabled
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Check for agent componentReview running processes for Helpu agent components or check services for Helpu-related entries. Look for processes named hAgent, HelpuAgent, or similar.Affected if A Helpu agent component is installed and running with elevated privileges
System is affected only if Helpuviewer version 2018.5.21.0 is installed with the file transfer feature enabled and an agent component configured to receive files from admin-level processes.
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 dataImplement strict input validation on the file receiver to verify file paths, prevent path traversal attacks, and validate file types before allowing file creation. Additionally, reduce the privilege level of the file reception process to minimize the impact of exploitation.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,968.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-7867 — 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-2020-7867 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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- Version or environment caveats, and links to real fixes
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