CVE-2020-27488
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.99%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.99% probability · 80th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- loxone/miniserver gen 1 firmware
- Source
- cve@mitre.org
EPSS 2.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.