dbcve.org
Syslink Sl 1000 Modular Gateway FirmwareOperating system · Systech

CVE-2016-2331

CRITICAL · 9.8 CVSS v3.0 Published 2016-04-25
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
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
The web interface on SysLINK SL-1000 Machine-to-Machine (M2M) Modular Gateway devices with firmware before 01A.8 has a default password, which makes it easier for remote attackers to obtain access 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 · high confidence

The SysLINK SL-1000 M2M Modular Gateway web interface ships with a default password that remains unchanged in firmware versions prior to 01A.8. This allows remote attackers to bypass authentication and gain full administrative access to the device through the web interface using the hardcoded default credentials.

MitigationUpdate firmware to version 01A.8 or later, and immediately change all default credentials to unique, strong passwords on any exposed devices.

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
Syslink Sl 1000 Modular Gateway FirmwareOperating system
Affected:all versions

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
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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. Identify the device model
    Access the web interface login page or check the device label/serial number to confirm it is a Systech Syslink SL-1000 Modular Gateway. The device typically exposes a web interface on ports 80 or 443.
    Affected if The device is a SysLINK SL-1000 M2M Modular Gateway and the web interface is network-accessible.
  2. Check firmware version
    Log into the web interface and navigate to the firmware or system information page (often under 'System', 'Status', or 'About' sections). Record the firmware version number displayed.
    Affected if The firmware version is shown as anything prior to 01A.8 (e.g., 01A.7, 01A.6, or older).
  3. Test default credentials
    Attempt to log into the web interface using the default administrative credentials. The hardcoded default username and password for this device are publicly known in vulnerability databases for CVE-2016-2331.
    Affected if Authentication succeeds using the default username and password, granting full administrative access.
  4. Verify if default password was changed
    If you have existing administrative access, check the user account settings to confirm whether the default administrative account password has been changed from its factory default value.
    Affected if The default administrative account still uses the factory-set password.

You are affected if you have a SysLINK SL-1000 device with a web interface accessible from your network and either the firmware version is prior to 01A.8 or the default password has not been changed.

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

Update firmware to version 01A.8 or later, and immediately change all default credentials to unique, strong passwords on any exposed devices.

Recommended fix Moderate confidence

Firmware version 01A.8 or later

  1. Obtain the latest firmware version (01A.8 or later) from the Syslink vendor
  2. Follow the vendor's documented firmware update procedure for the SL-1000 Modular Gateway
  3. After upgrading, change the default password to a strong, unique password via the web interface
  4. Verify that the new firmware is installed by checking the device status page

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

Fix this in Syslink Sl 1000 Modular Gateway 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
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2016-2331 — 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-2016-2331 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