9.8
CRITICAL
CVE-2020-27488
Loxone Miniserver Unauthenticated Cloud Service Access
Description

Loxone Miniserver devices with firmware before 11.1 (aka 11.1.9.3) are unable to use an authentication method that is based on the "signature of the update package." Therefore, these devices (or attackers who are spoofing these devices) can continue to use an unauthenticated cloud service for an indeterminate time period (possibly forever). Once an individual device's firmware is updated, and authentication occurs once, the cloud service recategorizes the device so that authentication is subsequently always required, and spoofing cannot occur.

INFO

Published Date :

Jan. 13, 2021, 8:15 p.m.

Last Modified :

Nov. 21, 2024, 5:21 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2020-27488 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Loxone miniserver_gen_1_firmware
2 Loxone miniserver_gen_1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-27488.

URL Resource
https://iot-lab-fh-ooe.github.io/loxone_clouddns_schwachstelle/ Exploit Third Party Advisory
https://iot-lab-fh-ooe.github.io/loxone_clouddns_vulnerability/ Exploit Third Party Advisory
https://www.loxone.com/dede/sicherheit-cloud-dns/ Product Vendor Advisory
https://www.loxone.com/enen/security-cloud-dns/ Vendor Advisory
https://iot-lab-fh-ooe.github.io/loxone_clouddns_schwachstelle/ Exploit Third Party Advisory
https://iot-lab-fh-ooe.github.io/loxone_clouddns_vulnerability/ Exploit Third Party Advisory
https://www.loxone.com/dede/sicherheit-cloud-dns/ Product Vendor Advisory
https://www.loxone.com/enen/security-cloud-dns/ Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-27488 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-27488 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://iot-lab-fh-ooe.github.io/loxone_clouddns_schwachstelle/
    Added Reference https://iot-lab-fh-ooe.github.io/loxone_clouddns_vulnerability/
    Added Reference https://www.loxone.com/dede/sicherheit-cloud-dns/
    Added Reference https://www.loxone.com/enen/security-cloud-dns/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Jan. 21, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://iot-lab-fh-ooe.github.io/loxone_clouddns_schwachstelle/ No Types Assigned https://iot-lab-fh-ooe.github.io/loxone_clouddns_schwachstelle/ Exploit, Third Party Advisory
    Changed Reference Type https://iot-lab-fh-ooe.github.io/loxone_clouddns_vulnerability/ No Types Assigned https://iot-lab-fh-ooe.github.io/loxone_clouddns_vulnerability/ Exploit, Third Party Advisory
    Changed Reference Type https://www.loxone.com/dede/sicherheit-cloud-dns/ No Types Assigned https://www.loxone.com/dede/sicherheit-cloud-dns/ Product, Vendor Advisory
    Changed Reference Type https://www.loxone.com/enen/security-cloud-dns/ No Types Assigned https://www.loxone.com/enen/security-cloud-dns/ Vendor Advisory
    Added CWE NIST CWE-287
    Added CPE Configuration AND OR *cpe:2.3:o:loxone:miniserver_gen_1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.1.9.3 OR cpe:2.3:h:loxone:miniserver_gen_1:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-27488 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.98 }} -0.91%

score

0.74784

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
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Scope
Confidentiality
Integrity
Availability
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Latest DB Update: Jun. 18, 2025 18:12