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CVE-2020-36517

26
FAUCET Score

CVE-2020-36517 is an information leak vulnerability affecting Nabu Casa Home Assistant Operating System and Home Assistant Supervised 2022.03. A remote attacker, specifically a malicious DNS operator, can exploit this flaw to gain knowledge about internal network resources due to a hardcoded DNS resolver configuration. Rated with a CVSS score of 7.5 (High), this vulnerability has a low attack complexity and does not require user interaction or privileges, potentially leading to a high impact on confidentiality. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2022.03CPE matchmatch criteria
cpe:2.3:a:home-assistant:home-assistant:2022.03:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.90%
Probability of exploitation in next 30 days
EPSS Percentile
85.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0290 is in the 74th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

community.home-assistant.io / t/ha-os-dns-setting-configuration-not-respected/356572
ExploitIssue TrackingVendor Advisory
github.com / home-assistant/plugin-dns/issues/17
Third Party Advisory
github.com / home-assistant/plugin-dns/issues/20
ExploitIssue TrackingThird Party Advisory
github.com / home-assistant/plugin-dns/issues/22
Issue TrackingThird Party Advisory
github.com / home-assistant/plugin-dns/issues/50
ExploitIssue TrackingThird Party Advisory
github.com / home-assistant/plugin-dns/issues/51
ExploitIssue TrackingThird Party Advisory
github.com / home-assistant/plugin-dns/issues/53
ExploitThird Party Advisory
github.com / home-assistant/plugin-dns/issues/54
ExploitThird Party Advisory
github.com / home-assistant/plugin-dns/issues/6
ExploitThird Party Advisory
github.com / home-assistant/plugin-dns/issues/64
ExploitThird Party Advisory
github.com / home-assistant/plugin-dns/issues/70
ExploitThird Party Advisory
github.com / home-assistant/plugin-dns/pull/55
ExploitPatchThird Party Advisory
github.com / home-assistant/plugin-dns/pull/56
ExploitIssue TrackingThird Party Advisory
github.com / home-assistant/plugin-dns/pull/58
PatchThird Party Advisory
github.com / home-assistant/plugin-dns/pull/59
Issue TrackingPatchThird Party Advisory