CVE-2020-9120
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 · uneditedCloudEngine 1800V versions V100R019C10SPC500 has a resource management error vulnerability. Remote unauthorized attackers could send specific types of messages to the device, resulting in the message received by the system can't be forwarded normally.
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 resource management error in Huawei CloudEngine 1800V V100R019C10SPC500 allows remote unauthenticated attackers to send specific malformed messages that exhaust or corrupt resources, preventing the device from forwarding messages normally and causing a 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= v100r019c10spc500CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 the device modelRun `display device` or `show device` command to confirm the hardware is a Huawei CloudEngine 1800VAffected if The device model is not CloudEngine 1800V, then it is not affected by this specific CVE
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Check the software versionRun `display version` or `show version` to retrieve the installed software version numberAffected if The version is exactly V100R019C10SPC500, the device is running the affected version
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Verify network accessibilityCheck if the device management interface or data plane ports are reachable from untrusted networks by reviewing the interface configurations with `display ip interface brief` and checking current ACL configurations with `display acl all`Affected if The device is directly accessible from untrusted networks without ACL filtering, making it vulnerable to remote unauthenticated attacks
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Check for existing traffic filteringReview applied ACLs or firewall policies on inbound interfaces to determine if malformed messages can be filtered before reaching the deviceAffected if No ACLs or filters are applied to block specific malformed messages, the device remains vulnerable
The environment is affected only if the device is a Huawei CloudEngine 1800V running exactly version V100R019C10SPC500 and is reachable from untrusted networks without proper traffic filtering.
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 vendor-supplied patch when available; until then, restrict network access to the device using ACLs or firewall rules to prevent unauthorized attackers from sending malicious messages.
- Consultation6.0 h
- Implementation2.0 h
- Testing10.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,048.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-9120 — 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-2020-9120 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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