CVE-2020-3936
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 · uneditedUltraLog Express device management interface does not properly filter user inputted string in some specific parameters, attackers can inject arbitrary SQL command.
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 confidenceSQL injection vulnerability in UltraLog Express device management interface where certain user-supplied parameters are not properly sanitized before being used in SQL queries, allowing attackers to inject and execute arbitrary SQL commands.
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= 1.4.0CVSS 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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Identify Unisoon Ultralog Express device in environmentLocate and confirm the presence of Unisoon Ultralog Express hardware or virtual appliance in your network inventory or device listAffected if The device is present in the environment and is the Unisoon Ultralog Express product
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Check firmware versionAccess the device admin interface or use the vendor-provided method to retrieve the installed firmware version numberAffected if The firmware version is exactly 1.4.0
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Verify device management interface is accessibleConfirm the web-based management interface is enabled and reachable on the device (typically via HTTP/HTTPS on the management network)Affected if The management interface is exposed and accessible to the user or network segment being assessed
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Determine if interface accepts user-supplied parametersInspect the management interface forms, URL parameters, or API endpoints that accept user input for potential interaction with backend database queriesAffected if The interface accepts user-supplied input through forms, URL parameters, or API calls that could be manipulated
The environment is affected if a Unisoon Ultralog Express device is present with firmware version 1.4.0 and its management interface is accessible and accepts user-supplied parameters that could be injected into SQL queries.
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 parameterized queries or prepared statements for all database interactions. Apply input validation and sanitization on all user-supplied parameters. Consider deploying a WAF as a temporary compensating control.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-3936 — 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-2020-3936 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
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