CVE-2019-20757
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 · uneditedNETGEAR R7800 devices before 1.0.2.62 are affected by command injection by an authenticated user.
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 confidenceNETGEAR R7800 routers before firmware version 1.0.2.62 contain a command injection vulnerability in their web interface that allows authenticated users to execute arbitrary operating system commands on the device through insufficient input validation.
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< 1.0.2.62CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/AC:L/PR:H/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 router modelCheck the device label on the router or access the web administration panel and look for the model number displayed on the login page or in the firmware settingsAffected if The device is not a NETGEAR R7800 router (this CVE only affects R7800)
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Determine the installed firmware versionLog into the router web interface and navigate to Administration > Firmware Update or Advanced > Administration > Firmware version. Alternatively, check the version displayed on the login page or in the router status pageAffected if The firmware version is less than 1.0.2.62 (the installed version falls within the affected range < 1.0.2.62)
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Confirm web interface accessibilityAttempt to access the router web interface via HTTP/HTTPS on the router LAN IP address (typically 192.168.1.1)Affected if The web management interface is reachable from an untrusted network (the vulnerability requires authenticated access to the web interface)
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Verify administrative credentialsCheck if default or weak administrative credentials are in use, or if the admin account is accessible to untrusted usersAffected if Untrusted or compromised accounts have administrative access to the router web interface (exploitation requires authenticated user access)
You are affected if you are running a NETGEAR R7800 router with firmware version below 1.0.2.62 and the web administration interface is accessible to untrusted users or compromised accounts.
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 data1.0.2.62
Upgrade NETGEAR R7800 firmware to version 1.0.2.62 or later. If upgrading is not immediately possible, restrict administrative access to trusted users and monitor for unauthorized access.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-20757 — 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-2019-20757 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
- No spam, self-promotion, credentials, or personal data