CVE-2019-20758
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 R7000 devices before 1.0.9.42 are affected by a buffer overflow 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 · moderate confidenceNETGEAR R7000 routers running firmware versions prior to 1.0.9.42 contain a buffer overflow vulnerability that can be exploited by an authenticated user. This could allow an attacker with valid credentials to execute arbitrary code or cause a denial of service condition.
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< 1.0.9.42CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/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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Confirm NETGEAR R7000 modelAccess the router administrative interface or check the physical device label to verify the exact model number is NETGEAR R7000Affected if The device model is not NETGEAR R7000, this specific CVE does not apply
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Identify the installed firmware versionLog into the router web interface (typically at 192.168.1.1), navigate to the Administration or Advanced settings section, and locate the firmware version information. The version is usually displayed on the status or firmware upgrade pageAffected if Unable to retrieve firmware version information from the device
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Compare firmware version against vulnerable rangeNote the exact firmware version string displayed (for example, 1.0.9.10, 1.0.9.38, etc.) and compare numerically to version 1.0.9.42Affected if The installed firmware version is less than 1.0.9.42 (for example, 1.0.9.38, 1.0.8.2, etc.)
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Verify authentication requirementsConfirm whether user authentication is required to access the router administrative interface and that default credentials have not been left unchangedAffected if The device is affected by this CVE only if an attacker can obtain valid administrative credentials; however, the version check remains the primary indicator of exposure
The environment is affected if the device is a NETGEAR R7000 router running firmware version lower than 1.0.9.42, regardless of authentication status.
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 data1.0.9.42
Upgrade NETGEAR R7000 firmware to version 1.0.9.42 or later to remediate this vulnerability.
- Consultation2.0 h
- Implementation2.0 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-2019-20758 — 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-2019-20758 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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