dbcve.org
Usg5500 FirmwareOperating system · Huawei

CVE-2016-8798

HIGH · 7.5 CVSS v3.0 Published 2017-04-02
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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 · unedited
Huawei USG5500 with software V300R001C00 and V300R001C00 allows attackers to bypass the anti-DDoS module of the USGs to cause a denial of service condition on the backend server.

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 confidence

The Huawei USG5500 firewall contains a vulnerability in its anti-DDoS module that can be bypassed, allowing attackers to reach backend servers and cause denial of service. The issue affects software versions V300R001C00 and V300R001C00 specifically.

MitigationApply available firmware updates from Huawei for the USG5500 series. If no patch is available, implement additional upstream DDoS mitigation or consider network segmentation to protect backend servers.

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
Usg5500 FirmwareOperating system
Affected:= v300r001c00= v300r001c10

CVSS 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:3.0/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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm USG5500 model presence
    Identify if Huawei USG5500 firewall is deployed in the network. Check hardware inventory, network diagrams, or run 'display device' on the Huawei firewall CLI.
    Affected if The environment does not include a USG5500 device, then this CVE does not apply.
  2. Check installed firmware version
    Access the USG5500 CLI and run 'display version' or 'display firmware version' to retrieve the currently running software version.
    Affected if The installed version is V300R001C00 or V300R001C10, the device falls within the affected version range.
  3. Verify anti-DDoS module is configured
    Access the USG5500 CLI and run 'display anti-ddos configuration' or check the security policy configuration to see if the anti-DDoS feature is enabled.
    Affected if The anti-DDoS module is enabled and the firmware version is within the affected range, the vulnerability is present.

If you have a Huawei USG5500 running firmware V300R001C00 or V300R001C10 with the anti-DDoS module enabled, your environment is affected by this CVE.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply available firmware updates from Huawei for the USG5500 series. If no patch is available, implement additional upstream DDoS mitigation or consider network segmentation to protect backend servers.

Fix this in Usg5500 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA2.0 h
20.0 hours of engineering $3,500
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2016-8798 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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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