CVE-2020-1814
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 · uneditedHuawei NIP6800 versions V500R001C30, V500R001C60SPC500, and V500R005C00; Secospace USG6600 and USG9500 versions V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, and V500R005C00 have a Dangling pointer dereference vulnerability. An authenticated attacker may do some special operations in the affected products in some special scenarios to exploit the vulnerability. Due to improper race conditions of different operations, successful exploit will lead to Dangling pointer dereference, causing some service abnormal.
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 dangling pointer dereference vulnerability exists in Huawei NIP6800 and Secospace USG6600/USG9500 firewall products. The issue stems from improper race conditions during certain concurrent operations. An authenticated attacker can trigger this condition through specific operations, causing the pointer to reference freed memory and resulting in service abnormalities.
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= v500r001c30= v500r001c60spc500= v500r005c00= v500r001c30spc200= v500r001c30spc600= v500r001c60spc500= v500r005c00= v500r001c30spc200= v500r001c30spc600= v500r001c60spc500= v500r005c00CVSS 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
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:L/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 Huawei firewall product modelAccess the device management interface or use the command 'display device' or 'display version' in the CLI to confirm the model is NIP6800, USG6600, or USG9500Affected if The model is not NIP6800, USG6600, or USG9500, then the device is not affected by this CVE
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Check the installed firmware versionExecute 'display version' or 'display firmware version' in the device CLI to retrieve the current firmware versionAffected if Unable to retrieve version information, skipping this check
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Compare the firmware version against affected versionsMatch the retrieved version against: NIP6800: v500r001c30, v500r001c60spc500, v500r005c00; USG6600: v500r001c30spc200, v500r001c30spc600, v500r001c60spc500, v500r005c00; USG9500: v500r001c30spc200, v500r001c30spc600, v500r001c60spc500, v500r005c00Affected if The installed version exactly matches one of the listed affected versions, indicating potential vulnerability
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Verify administrative access exposureReview network access controls, SSH/HTTPS management interface exposure, and authentication configuration to determine if an authenticated attacker could access the deviceAffected if The management interface is accessible to untrusted users or the device lacks strong access controls, combined with a vulnerable version, the device could be exploited
The environment is affected if the device is a Huawei NIP6800, USG6600, or USG9500 running one of the specific firmware versions listed (v500r001c30, v500r001c60spc500, v500r005c00, or their respective spc variants) and the device management interface is accessible to authenticated attackers.
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 Huawei-supplied firmware patches or updates for the affected product versions. If patches are unavailable, restrict administrative access to trusted personnel only to reduce exploitation risk.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-1814 — 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-2020-1814 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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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.
- 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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