CVE-2023-33642
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 · uneditedH3C Magic R300 version R300-2100MV100R004 was discovered to contain a stack overflow via the Edit_BasicSSID interface at /goform/aspForm.
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 confidenceA stack buffer overflow vulnerability exists in the H3C Magic R300 router (version R300-2100MV100R004) in the Edit_BasicSSID form handler at /goform/aspForm. The vulnerability allows an attacker to overflow a stack-based buffer, potentially enabling arbitrary code execution or denial of service on the affected device.
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= r300-2100mv100r004CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/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 router modelAccess the router's web administration interface or check the device label/metadata to confirm the model is H3C Magic R300 2100mAffected if Device is not an H3C Magic R300 2100m router, then it is not affected by this specific CVE
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Check firmware versionNavigate to the router's admin panel (typically at 192.168.1.1 or similar) and locate the firmware/version information section, or use telnet/SSH if available to run 'cat /proc/version' or '固件版本' commandAffected if Firmware version is not exactly R300-2100MV100R004, then it is not affected by this CVE (only this exact version is listed as affected)
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Verify web interface is accessibleAttempt to access the router's HTTP management interface on the local network (typically ports 80 or 443)Affected if The web interface is not accessible, the vulnerability cannot be triggered since it resides in the web form handler
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Confirm vulnerable endpoint existsSend an HTTP GET or POST request to http://[router-ip]/goform/aspForm and check for a response indicating the endpoint existsAffected if The /goform/aspForm endpoint does not exist or does not respond, the Edit_BasicSSID form handler is not present and the device is not affected
The device is affected ONLY if it is an H3C Magic R300 2100m router running firmware version exactly R300-2100MV100R004 with the web interface and /goform/aspForm endpoint 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 vendor firmware updates when available; until then, restrict network access to the router's management interface and disable remote administration if possible.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-33642 — 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-2023-33642 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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