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CVE-2020-27488

31
FAUCET Score

CVE-2020-27488 is a critical vulnerability affecting Loxone Miniserver devices with firmware before version 11.1, allowing unauthenticated access to cloud services due to a lack of signature-based authentication for update packages. This flaw presents a severe risk with a CVSS score of 9.8 (CRITICAL), indicating that an unauthenticated attacker can achieve complete compromise (confidentiality, integrity, availability) over the network with low attack complexity. While there is no known active exploitation, public exploit code, or KEV entry, the vulnerability has garnered significant community discussion, with 10 mentions, suggesting awareness and potential future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 11.1.9.3CPE matchmatch criteria
cpe:2.3:o:loxone:miniserver_gen_1_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.96%
Probability of exploitation in next 30 days
EPSS Percentile
78.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0196 is in the 67th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

iot-lab-fh-ooe.github.io / loxone_clouddns_schwachstelle
ExploitThird Party Advisory
iot-lab-fh-ooe.github.io / loxone_clouddns_vulnerability
ExploitThird Party Advisory
loxone.com / dede/sicherheit-cloud-dns
ProductVendor Advisory
loxone.com / enen/security-cloud-dns
Vendor Advisory