CVE-2020-36517

Name: CVE-2020-36517
Creator: NVD / NIST
Published: 2022-03-10T17:41:21.183+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.85%

Last modified Jun 17, 2026

CVE-2020-36517 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An information leak in Nabu Casa Home Assistant Operating System and Home Assistant Supervised 2022.03 allows a DNS operator to gain knowledge about internal network resources via the hardcoded DNS resolver configuration.. EPSS estimates a 2.85% chance of exploitation in the next 30 days.

Description

An information leak in Nabu Casa Home Assistant Operating System and Home Assistant Supervised 2022.03 allows a DNS operator to gain knowledge about internal network resources via the hardcoded DNS resolver configuration.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.85%

84.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-203

Affected Software

Vendor	Product	Versions
Home-Assistant	Home-Assistant	2022.03

References

https://community.home-assistant.io/t/ha-os-dns-setting-configuration-not-respected/356572Exploit, Issue Tracking, Vendor Advisory
https://github.com/home-assistant/plugin-dns/issues/17Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/20Exploit, Issue Tracking, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/22Issue Tracking, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/50Exploit, Issue Tracking, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/51Exploit, Issue Tracking, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/53Exploit, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/54Exploit, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/6Exploit, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/64Exploit, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/70Exploit, Third Party Advisory
https://github.com/home-assistant/plugin-dns/pull/55Exploit, Patch, Third Party Advisory
https://github.com/home-assistant/plugin-dns/pull/56Exploit, Issue Tracking, Third Party Advisory
https://github.com/home-assistant/plugin-dns/pull/58Patch, Third Party Advisory
https://github.com/home-assistant/plugin-dns/pull/59Issue Tracking, Patch, Third Party Advisory
https://community.home-assistant.io/t/ha-os-dns-setting-configuration-not-respected/356572Exploit, Issue Tracking, Vendor Advisory
https://github.com/home-assistant/plugin-dns/issues/17Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/20Exploit, Issue Tracking, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/22Issue Tracking, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/50Exploit, Issue Tracking, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/51Exploit, Issue Tracking, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/53Exploit, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/54Exploit, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/6Exploit, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/64Exploit, Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/70Exploit, Third Party Advisory
https://github.com/home-assistant/plugin-dns/pull/55Exploit, Patch, Third Party Advisory
https://github.com/home-assistant/plugin-dns/pull/56Exploit, Issue Tracking, Third Party Advisory
https://github.com/home-assistant/plugin-dns/pull/58Patch, Third Party Advisory
https://github.com/home-assistant/plugin-dns/pull/59Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Mar 10, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-36517?

How severe is CVE-2020-36517?

CVE-2020-36517 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.85% probability of exploitation in the next 30 days.

How do I fix CVE-2020-36517?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-36517?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST