dbcve.org
E587 Mobile Wifi FirmwareOperating system · Huawei

CVE-2015-3911

HIGH · 9.0 CVSS v2.0 Published 2015-05-21
Fix available
A fix is available. Upgrade to after 11.100.00.00.00 or later.
See remediation →
99/100
Remediation priority · Urgent
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 E587 Mobile WiFi with firmware before 11.203.30.00.00 allows remote attackers to bypass authentication, change configurations, send messages, and cause a denial of service (device restart) via unspecified vectors.

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

Authentication bypass vulnerability in Huawei E587 Mobile WiFi devices allowing remote unauthenticated attackers to access the device management interface, modify configurations, send messages, and trigger device restarts. Affects firmware versions prior to 11.203.30.00.00.

MitigationUpgrade device firmware to version 11.203.30.00.00 or later. If firmware updates are unavailable, restrict network exposure by placing devices behind firewalls and disabling remote management interfaces.

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
E587 Mobile Wifi FirmwareOperating system
Affected:<= 11.100.00.00.00

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
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Complete

AV:N/AC:L/Au:N/C:P/I:P/A:C

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 device model and firmware version
    Access the device web interface (typically at 192.168.1.1) and navigate to Device Information or Status page to view the firmware version. Alternatively, connect via telnet/SSH if enabled and check the version information.
    Affected if The firmware version displayed is 11.100.00.00.00 or lower (any version prior to 11.203.30.00.00).
  2. Verify remote management is enabled
    Log into the device web interface and check Settings or Security settings for options like 'Remote Management', 'Remote Access', or 'Web Service Over WAN'. Verify if the feature is enabled and which IP addresses are allowed.
    Affected if Remote management or web access from WAN is enabled, allowing access from external networks.
  3. Check WAN-facing exposure
    Determine if the device's public IP address is directly accessible from the internet. Use an external IP checker to identify the device's public IP, then attempt to access the login page from an external network or review firewall rules.
    Affected if The device management interface is reachable from the internet via its public IP address.
  4. Confirm default credentials are in use
    Attempt to log into the device web interface using default Huawei credentials (typically admin/admin or admin/password). If already logged in, check account settings for unchanged default passwords.
    Affected if Default administrator credentials have not been changed from the manufacturer defaults.

A user is affected if their Huawei E587 device runs firmware version 11.100.00.00.00 or lower AND has remote management enabled or is directly exposed to the internet.

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.

dbcve · scoped
Upgrade available Upgrade to a release after 11.100.00.00.00
Interim mitigation

Upgrade device firmware to version 11.203.30.00.00 or later. If firmware updates are unavailable, restrict network exposure by placing devices behind firewalls and disabling remote management interfaces.

Recommended fix High confidence

Firmware version 11.203.30.00.00 or later

  1. 1. Access the Huawei E587 Mobile WiFi administration interface through its web GUI (typically at 192.168.1.1)
  2. 2. Navigate to the System Settings or Firmware Upgrade section
  3. 3. Check the current firmware version under the device information or status page
  4. 4. Download the firmware update version 11.203.30.00.00 or later from the official Huawei support website (support.huawei.com)
  5. 5. In the firmware upgrade page, select the downloaded firmware file and initiate the upgrade
  6. 6. Wait for the upgrade process to complete - do not power off the device during this process
  7. 7. After the device restarts, verify the new firmware version is installed
  8. 8. Consider resetting to factory defaults and reconfiguring the device to ensure a clean state
Caveat Standard firmware upgrade - backup configuration before upgrading; device will restart during process

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in E587 Mobile Wifi Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing3.0 h
  • Review / QA2.0 h
17.0 hours of engineering $3,050
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,880.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2015-3911 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

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-2015-3911 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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