CVE-2014-3919
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 · uneditedA vulnerability exists in Netgear CG3100 devices before 3.9.2421.13.mp3 V0027 via an embed malicious script in an unspecified page, which could let a malicious user obtain sensitive information.
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 confidenceCross-site scripting (XSS) vulnerability in Netgear CG3100 devices allows attackers to embed malicious scripts in unspecified pages, potentially stealing sensitive user information such as session cookies or credentials.
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< 3.9.2421.13.mp3.v0027CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
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 modelLog into the router web admin interface (commonly at 192.168.0.1 or 192.168.1.1) and check the device model on the status or home page, or look for a model label on the physical deviceAffected if Device is a Netgear CG3100
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Locate firmware version in admin interfaceIn the router web interface, navigate to the Status, Administration, or System Information page to find the firmware version numberAffected if Firmware version displayed is lower than 3.9.2421.13.mp3.v0027 or version information is unavailable
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Check for accessible web management pagesAttempt to access the router login page via HTTP to confirm the web interface is reachableAffected if Web management interface is accessible and firmware version cannot be verified or is below 3.9.2421.13.mp3.v0027
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Review HTTP response headersUse browser developer tools or a tool like curl to request the router login page and examine the Server header or any X-Framework-Version header for version informationAffected if Header reveals a version lower than 3.9.2421.13.mp3.v0027 or no version header is present with unverified firmware
The environment is affected if the Netgear CG3100 device is running firmware version 3.9.2421.13.mp3.v0027 or lower.
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.
dbcve · scoped3.9.2421.13.mp3.v0027
Update Netgear CG3100 firmware to version 3.9.2421.13.mp3 V0027 or later to patch the XSS vulnerability.
3.9.2421.13.mp3.v0027
- Download firmware version 3.9.2421.13.mp3.v0027 from the official Netgear support website
- Access the Netgear CG3100 router web interface by entering the router's IP address in a web browser
- Log in to the router administration panel with administrator credentials
- Navigate to the Administration or Firmware Update section of the router interface
- Upload and apply the downloaded firmware file (3.9.2421.13.mp3.v0027)
- Wait for the firmware upgrade to complete and the router to reboot
- Verify the new firmware version is installed by checking the router status page
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-3919 — 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-2014-3919 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