dbcve.org
T Router FirmwareOperating system · Softcase

CVE-2018-11241

CRITICAL · 9.8 CVSS v3.0 Published 2018-09-21
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
An issue was discovered on SoftCase T-Router build 20112017 devices. A remote attacker can read and write to arbitrary files on the system as root, as demonstrated by code execution after writing to a crontab file. This is fixed in production builds as of Spring 2018.

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

SoftCase T-Router build 20112017 devices contain a pre-authentication vulnerability allowing remote attackers to read and write arbitrary files as root. An attacker can achieve code execution by writing a malicious payload to the system crontab file. This is a critical unauthenticated file write vulnerability accessible over the network.

MitigationUpgrade T-Router firmware to production builds released in Spring 2018 or later. If immediate upgrade is not possible, restrict network access to the device management interface and monitor for unauthorized access attempts.

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
T Router FirmwareOperating system
Affected:= 20112017

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 device management interface or check device documentation/labels to confirm the device is a SoftCase T-Router.
    Affected if The device is a SoftCase T-Router.
  2. Determine the firmware build version
    Log into the device admin panel or check system information page to locate the firmware build number. This is typically found under About, System Info, or Status pages.
    Affected if The firmware build number is exactly 20112017.
  3. Verify network accessibility of management interface
    Determine if the device web management interface is reachable from untrusted networks by attempting to access the device IP from an external location or reviewing firewall rules.
    Affected if The management interface is accessible from networks outside the local administrative zone.
  4. Confirm pre-authentication file write access
    The vulnerability allows unauthenticated file write operations. Attempt to access common management URLs without login credentials to verify the endpoint is exposed.
    Affected if File write endpoints are accessible without authentication.

If the device is a SoftCase T-Router running firmware build 20112017 with an exposed management interface, the system is affected by this pre-authentication file write vulnerability.

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

Upgrade T-Router firmware to production builds released in Spring 2018 or later. If immediate upgrade is not possible, restrict network access to the device management interface and monitor for unauthorized access attempts.

Recommended fix Moderate confidence

Spring 2018 production build or later

  1. Identify the current firmware version on the T-Router device
  2. Download the Spring 2018 production build (or later) from the official SoftCase T-Router vendor source
  3. Access the router's administrative web interface or use the official firmware update mechanism
  4. Upload and apply the new firmware build
  5. Verify the firmware update was applied successfully
  6. Confirm the arbitrary file write vulnerability is no longer exploitable by testing file write access
Caveat Ensure to backup router configuration before upgrading, as firmware updates may reset settings

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

Fix this in T Router Firmware Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,980
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,168.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2018-11241 — 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-2018-11241 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