CVE-2020-35230
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 · uneditedMultiple integer overflow parameters were found in the web administration panel on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices. Most of the integer parameters sent through the web server can be abused to cause a denial of service attack.
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 confidenceInteger overflow vulnerabilities exist in the web administration panel of NETGEAR JGS516PE and GS116Ev2 switches (firmware v2.6.0.43). Multiple integer parameters passed to the web server can be manipulated to trigger overflow conditions, leading to denial of service.
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= 2.6.0.43= 2.6.0.43CVSS 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 switch modelAccess the device management interface or check the physical device label to confirm the model is either GS116Ev2 or JGS516PEAffected if The device is not a GS116Ev2 or JGS516PE switch, then it is not affected by this specific CVE
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Check firmware versionLog into the web administration panel and navigate to the Administration > Firmware Upgrade or System > Device Information section to view the current firmware versionAffected if The installed firmware version is exactly 2.6.0.43
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Confirm web administration panel is enabledVerify that the HTTP/HTTPS web management interface is enabled on the switch by checking the Administration > System Settings or Management Access configurationAffected if The web administration panel is disabled or inaccessible, the vulnerability cannot be exploited
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Check network accessibility of management interfaceAttempt to reach the switch web interface from a network perspective using the device IP address on ports 80 or 443 to determine if the management interface is exposedAffected if The web interface is reachable from untrusted network segments, exploitation becomes possible
A device is affected if it is a GS116Ev2 or JGS516PE switch running firmware version 2.6.0.43 with the web administration panel enabled and accessible.
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 latest NETGEAR firmware update for the affected switch models. If no update is available, restrict access to the web administration panel using network segmentation or firewall rules to prevent untrusted users from reaching the management interface.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-35230 — 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-2020-35230 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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