CVE-2007-5419
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 · uneditedThe 3Com 3CRWER100-75 router with 1.2.10ww software, when enabling an optional virtual server, configures this server to accept all source IP addresses on the external (Internet) interface unless the user selects other options, which might expose the router to unintended incoming traffic from remote attackers, as demonstrated by setting up a virtual server on port 80, which allows remote attackers to access the web management interface.
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 confidenceThe 3Com 3CRWER100-75 router with firmware 1.2.10ww has an insecure default configuration in its virtual server feature. When users enable port forwarding (e.g., for port 80), the router defaults to accepting connections from ALL source IP addresses on the external Internet interface unless explicitly restricted, inadvertently exposing the web management interface to remote attackers.
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= 3crwer100-75CVSS 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
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:L/Au:N/C:C/I:C/A:C
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 device model and firmware versionAccess the router web interface or check the device label. Navigate to Status or System Info page to confirm the model is 3CRWER100-75 (or 3crwe554g72t variant) and firmware version is 1.2.10ww.Affected if Device model matches 3CRWER100-75/3crwe554g72t and firmware is version 1.2.10ww.
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Verify virtual server feature is enabledLog into the router web interface and navigate to the Virtual Server or Port Forwarding section. Check if any port forwarding rules are configured and enabled.Affected if Virtual server/port forwarding is enabled with at least one rule configured.
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Inspect forwarded ports on external interfaceIn the Virtual Server configuration, identify which ports are being forwarded to internal hosts. Specifically note if ports 80 (HTTP) or 443 (HTTPS) are included in any forwarding rule.Affected if Port forwarding is active for web management ports 80 or 443.
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Check source IP restrictions on virtual server rulesExamine each virtual server rule individually. Look for a source IP address field or source address restriction setting within each forwarding rule configuration.Affected if The virtual server rule shows no source IP restriction configured, meaning it accepts connections from Any IP address (0.0.0.0 or blank/any).
The device is affected if it is a 3CRWER100-75 router on firmware 1.2.10ww with virtual server/port forwarding enabled, particularly for ports 80 or 443, and the forwarding rules have no source IP address restrictions configured.
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 dataRestrict the virtual server rule to specific trusted source IP addresses only, or avoid forwarding management ports (80/443) to the external interface. Disable the virtual server feature when not required.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2007-5419 — 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-2007-5419 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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