CVE-2020-27488

CRITICAL
9.8
CVSS Score
Published: January 13, 2021 at 07:06 PM UTC
Updated: June 17, 2026 at 03:09 AM UTC
2 products affected across 1 vendorMiniserver Gen 1 FirmwareMiniserver Gen 1

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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 11.1.9.3
Affected range stops below 11.1.9.3, so it looks safe — our inference, not a vendor statement
loxone-miniserver-gen-1 (same device)
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-287

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