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Indoor Connect 8855 FirmwareOperating system · Ericsson

CVE-2025-40842

MEDIUM · 6.1 CVSS v3.1 Published 2026-03-25
Fix available
A fix is available. Upgrade to 2025.q3 or later.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable No privileges

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
Ericsson Indoor Connect 8855 versions prior to 2025.Q3 contains a Cross-Site Scripting (XSS) vulnerability which, if exploited, can lead to unauthorized disclosure and modification of certain information.

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

Ericsson Indoor Connect 8855 devices contain a Cross-Site Scripting (XSS) vulnerability in the web interface prior to version 2025.Q3. The vulnerability allows attackers to inject malicious scripts that can lead to unauthorized disclosure and modification of information through user session compromise.

MitigationUpdate Ericsson Indoor Connect 8855 firmware to version 2025.Q3 or later. Apply input validation and output encoding to user-supplied data in the web interface as a compensating control until the update is applied.

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
Indoor Connect 8855 FirmwareOperating system
Affected:< 2025.q3

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
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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. Check the installed firmware version
    Access the Ericsson Indoor Connect 8855 web interface by entering the device IP in a browser, then navigate to the System or Settings section to view the firmware version. Alternatively, log into the device via SSH or console and run the command to display firmware version (typically 'show version' or 'firmware version').
    Affected if The displayed firmware version is earlier than 2025.Q3 (for example, 2025.Q2, 2025.Q1, or any 2024.x release).
  2. Confirm the web interface is enabled
    Attempt to access the device web interface by navigating to https://[device-ip] or http://[device-ip] in a web browser. Check if the login page loads successfully.
    Affected if The web interface is accessible and responds with the Ericsson Indoor Connect login page, indicating the web management interface is enabled.
  3. Verify the device is an Ericsson Indoor Connect 8855
    Examine the web interface login page, device label, or CLI output for the exact model number. In the web interface, this is typically displayed in the header, footer, or system information page.
    Affected if The device model shown is specifically 'Indoor Connect 8855' or '8855' and matches the affected product line.

A user is affected if the Ericsson Indoor Connect 8855 device is running firmware version earlier than 2025.Q3 and the web interface is enabled and accessible.

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 2025.q3 or later
Fixed in 2025.q3
Interim mitigation

Update Ericsson Indoor Connect 8855 firmware to version 2025.Q3 or later. Apply input validation and output encoding to user-supplied data in the web interface as a compensating control until the update is applied.

Recommended fix Moderate confidence

2025.Q3

  1. Identify the current firmware version of the Ericsson Indoor Connect 8855 device
  2. Download the firmware version 2025.Q3 or later from the official Ericsson support portal
  3. Follow the manufacturer's standard firmware upgrade procedure for the Indoor Connect 8855 device
  4. After upgrading, verify the device is running firmware version 2025.Q3 or later
  5. Test that the XSS vulnerability is no longer present

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

Fix this in Indoor Connect 8855 Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,060
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.

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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-2025-40842 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