CVE-2020-21990Public exploitNetwork attack vector

Unauthenticated sensitive-data disclosure via unchecked REST access

Published Apr 29, 2021 · Updated Aug 4, 2024

Information disclosure in MyDomoAtHome REST API 0.2.40 allows remote attackers to access sensitive information via crafted requests. The REST API fails to enforce authorization on specially crafted requests, exposing Domoticz gateway data without credentials. Exploitation requires network reachability but no authentication or user interaction, and the documented impact is limited to confidentiality.

CVSS severity7.5
High
EPSS probability2.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in MyDomoAtHome REST API 0.2.40 allows remote attackers to access sensitive information via crafted requests. The REST API fails to enforce authorization on specially crafted requests, exposing Domoticz gateway data without credentials. Exploitation requires network reachability but no authentication or user interaction, and the documented impact is limited to confidentiality.

The record

CVE
CVE-2020-21990
Published
Apr 29, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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