dbcve.org
Cloudlink Board FirmwareOperating system · Huawei

CVE-2020-1841

HIGH · 7.5 CVSS v3.1 Published 2020-02-17
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 CloudLink Board version 20.0.0; DP300 version V500R002C00; RSE6500 versions V100R001C00, V500R002C00, and V500R002C00SPC900; and TE60 versions V500R002C00, V600R006C00, V600R006C00SPC200, V600R006C00SPC300, V600R006C10, V600R019C00, and V600R019C00SPC100 have an information leak vulnerability. An unauthenticated, remote attacker can make a large number of attempts to guess information. Successful exploitation may cause information leak.

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

This is an information leak vulnerability in multiple Huawei video conferencing products (CloudLink Board, DP300, RSE6500, TE60). An unauthenticated, remote attacker can make numerous attempts to guess or brute-force sensitive information, potentially exposing system data or credentials.

MitigationImplement network-level access controls to limit exposure, apply rate limiting and account lockout policies to prevent guessing attacks, and apply vendor patches when released.

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
Cloudlink Board FirmwareOperating system
Affected:= 20.0.0
Dp300 FirmwareOperating system
Affected:= v500r002c00
Rse6500 FirmwareOperating system
Affected:= v100r001c00= v500r002c00= v500r002c00spc900
Te60 FirmwareOperating system
Affected:= v500r002c00= v600r006c00= v600r006c00spc200= v600r006c00spc300= v600r006c10= v600r019c00= v600r019c00spc100

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
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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. Identify product model and firmware version
    Access the device management interface or check system information page. For CloudLink Board, DP300, RSE6500, and TE60, navigate to System > Device Info or use the 'show version' command via CLI to retrieve the exact firmware version.
    Affected if The firmware version exactly matches one of the following: CloudLink Board = 20.0.0; DP300 = v500r002c00; RSE6500 = v100r001c00, v500r002c00, or v500r002c00spc900; TE60 = v500r002c00, v600r006c00, v600r006c00spc200, v600r006c00spc300, v600r006c10, v600r019c00, or v600r019c00spc100
  2. Verify if management interface is network accessible
    Check network configuration to determine if the web-based management interface or CLI access ports (typically HTTPS port 443, SSH port 22) are exposed to untrusted networks. Review firewall rules and NAT configurations that allow external access.
    Affected if The management interface is reachable from untrusted networks or the internet without proper network segmentation or VPN requirements.
  3. Check for brute-force protection mechanisms
    Review system security settings for account lockout policies and login attempt rate limiting. Navigate to Security > Account Policy or similar configuration section in the device management interface.
    Affected if Account lockout after failed attempts is disabled, rate limiting on login attempts is not configured, or such protections are absent.
  4. Review authentication logs for brute-force indicators
    Examine system security logs for repeated failed login attempts from external IP addresses. Access Logs > Security Log or run 'display logbuffer' command to identify suspicious authentication patterns.
    Affected if Logs show numerous failed login attempts from external sources, indicating the system has been targeted or is exposed to brute-force scanning.

The environment is affected if the device runs one of the specified firmware versions AND the management interface is network-accessible without adequate brute-force protections.

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

Implement network-level access controls to limit exposure, apply rate limiting and account lockout policies to prevent guessing attacks, and apply vendor patches when released.

Fix this in Cloudlink Board Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2020-1841 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
  • No spam, self-promotion, credentials, or personal data