CVE-2019-7485
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 · uneditedBuffer overflow in SonicWall SMA100 allows an authenticated user to execute arbitrary code in DEARegister CGI script. This vulnerability impacted SMA100 version 9.0.0.3 and earlier.
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 confidenceBuffer overflow vulnerability in the DEARegister CGI script of SonicWall SMA100 appliances allows authenticated users to execute arbitrary code. The overflow occurs when processing user-supplied input in the CGI component, enabling an attacker with valid credentials to overwrite stack memory and gain code execution with the web server's privileges.
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<= 9.0.0.3CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/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 the SMA100 firmware versionAccess the SMA100 administrative interface and navigate to System > Status or use the command line (ssh admin@<device-ip> and run 'version' or 'show system info') to retrieve the current firmware version.Affected if The firmware version is 9.0.0.3 or any version lower than 9.0.0.3 (for example, 9.0.0.2, 8.x.x.x, etc.).
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Confirm the device is a SMA100 series applianceVerify the device model through the web interface (Device > Overview or General > Settings) or via CLI command 'show system info' or 'get system status'.Affected if The device is a SonicWall SMA 100 series (SMA 200, SMA 210, SMA 400, SMA 410, or SMA 500v) and the firmware version is within the affected range.
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Check if web management interface is exposedReview network configuration to determine if the SMA100 administrative web interface (HTTPS on port 443 or HTTP on port 80) is accessible from untrusted networks. This can be verified via firewall rules, NAT configuration, or the device's 'Management' settings under Network > Interfaces.Affected if The administrative interface is accessible from the internet or untrusted networks, allowing authenticated attackers to reach the vulnerable CGI component.
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Review admin account activity logsInspect the SMA100 logs (Log > View > System Logs or via CLI 'show logs') for authentication events to the DEARegister CGI endpoint. Look for POST requests to /cgi-bin/DEARegister or similar patterns.Affected if Unexpected or unauthorized authenticated sessions are observed, particularly involving the DEARegister endpoint.
A user is affected if their SonicWall SMA100 appliance runs firmware version 9.0.0.3 or lower, has the DEARegister CGI component present, and the administrative interface is accessible to authenticated 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 dataApply the vendor-supplied firmware update for SMA100 version 9.0.0.3 or later. If immediate patching is not possible, restrict administrative access to trusted IP addresses and monitor for suspicious authentication patterns.
- Consultation2.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2019-7485 — 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-2019-7485 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
- No weaponised exploit code, or anything meant to cause harm
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