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Improper Access ControlWeakness · CWE-284

CVE-2025-27215

HIGH · 8.1 CVSS v3.1 Published 2025-08-21
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
87/100
Remediation priority · High
Remotely reachable 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 Improper Access Control could allow a malicious actor authenticated in the API of certain UniFi Connect Display Cast devices to make unsupported changes to the system. Affected Products: UniFi Connect Display Cast (Version 1.10.3 and earlier) UniFi Connect Display Cast Pro (Version 1.0.89 and earlier) UniFi Connect Display Cast Lite (Version 1.0.3 and earlier) Mitigation: Update UniFi Connect Display Cast to Version 1.10.7 or later Update UniFi Connect Display Cast Pro to Version 1.0.94 or later Update UniFi Connect Display Cast Lite to Version 1.1.8 or later

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

An improper access control vulnerability in the API of UniFi Connect Display Cast devices allows authenticated malicious users to make unsupported system changes. The vulnerability stems from insufficient authorization checks in the API layer, enabling authenticated attackers to bypass intended access restrictions.

MitigationUpdate UniFi Connect Display Cast devices to version 1.10.7 (or later), Pro to 1.0.94 (or later), and Lite to 1.1.8 (or later) to resolve the improper access control vulnerability.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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. Identify the UniFi Connect Display device model
    Check the device model or firmware information through the UniFi controller, device status page, or the device's local web interface. Look for 'UniFi Connect Display Cast', 'Pro', or 'Lite' designations.
    Affected if The device is not a UniFi Connect Display Cast, Pro, or Lite device.
  2. Locate the installed firmware version
    Access the device's admin interface or UniFi controller console and navigate to the device details section to view the current firmware version. Alternatively, check the device's system information page if available.
    Affected if Unable to determine the firmware version from the device or controller.
  3. Compare installed version against fixed releases
    Match the identified firmware version to the following thresholds: Display Cast should be below 1.10.7, Pro should be below 1.0.94, or Lite should be below 1.1.8 to be considered affected.
    Affected if The installed version is Display Cast below 1.10.7, Pro below 1.0.94, or Lite below 1.1.8.
  4. Verify API access is enabled
    Check the device settings through the UniFi controller or local web interface for API or developer settings. Look for options related to API access, remote management, or developer mode.
    Affected if API access is explicitly enabled or the device exposes API endpoints externally.
  5. Confirm user authentication is configured
    Review the user accounts and authentication settings on the device or UniFi controller. Determine if local or remote user accounts with API access privileges exist.
    Affected if User accounts with API access permissions are present on the device.

A user is affected if they have a UniFi Connect Display Cast, Pro, or Lite device running firmware versions below 1.10.7, 1.0.94, or 1.1.8 respectively, with the API enabled and user accounts configured.

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 UniFi Connect Display Cast devices to version 1.10.7 (or later), Pro to 1.0.94 (or later), and Lite to 1.1.8 (or later) to resolve the improper access control vulnerability.

Recommended fix High confidence

UniFi Connect Display Cast: 1.10.7+ | UniFi Connect Display Cast Pro: 1.0.94+ | UniFi Connect Display Cast Lite: 1.1.8+

  1. Identify the specific UniFi Connect Display Cast model (Standard, Pro, or Lite) in your deployment
  2. Access the UniFi Controller or the device's direct management interface
  3. Navigate to the device settings or firmware update section
  4. Check the current installed version to confirm it is vulnerable (1.10.3 or earlier for Standard, 1.0.89 or earlier for Pro, 1.0.3 or earlier for Lite)
  5. Locate and apply the firmware update: For UniFi Connect Display Cast, update to version 1.10.7 or later; For UniFi Connect Display Cast Pro, update to version 1.0.94 or later; For UniFi Connect Display Cast Lite, update to version 1.1.8 or later
  6. Verify the update was successful by checking the new firmware version
  7. Confirm the device is functioning normally post-update

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

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,690
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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-2025-27215 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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