Win 240 FirmwareOperating system · Intelbras

CVE-2018-10369

CRITICAL · 9.8 CVSS v3.0 Published 2018-08-15
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
A Cross-site scripting (XSS) vulnerability was discovered on Intelbras Win 240 V1.1.0 devices. An attacker can change the Admin Password without a Login.

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

A stored cross-site scripting (XSS) vulnerability in the Intelbras Win 240 V1.1.0 wireless router allows unauthenticated attackers to inject malicious scripts that execute in the context of the administrator's session, enabling unauthorized admin password changes without any prior authentication.

MitigationRestrict physical and network access to the device's management interface; implement network segmentation; contact Intelbras for firmware updates; monitor for unauthorized configuration changes.

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
Win 240 FirmwareOperating system
Affected:= 1.1.0

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
    Locate the router label or access the web management interface to confirm the model is Intelbras Win 240
    Affected if The device is not an Intelbras Win 240 router
  2. Check the firmware version
    Access the router web interface (typically at 192.168.1.1) and navigate to the firmware or status page to view the installed version, or use command-line tools like 'telnet' or 'curl' to query the device's version endpoint
    Affected if The firmware version is exactly 1.1.0
  3. Verify web management interface accessibility
    Confirm the router's HTTP/HTTPS management interface is reachable from the network by attempting to access the device's IP address in a browser or via curl
    Affected if The web interface is exposed to the network (this is required for the XSS vector)
  4. Inspect for unauthorized admin password changes
    Log into the router admin panel and check the admin account settings for any unexpected password modifications, or review system logs for password change events
    Affected if The admin password was changed without the legitimate administrator's knowledge

The device is affected if it is an Intelbras Win 240 router running firmware version 1.1.0 and its web management interface is network-accessible, allowing the stored XSS to execute in an administrator's session.

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

Restrict physical and network access to the device's management interface; implement network segmentation; contact Intelbras for firmware updates; monitor for unauthorized configuration changes.

Fix this in Win 240 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
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Scan for this in your stack

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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-2018-10369 in production — separate from our analysis above.

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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
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  • Version or environment caveats, and links to real fixes
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