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Fencer Vulns
high 7.5

CVE-2020-36517 json

An information leak in Nabu Casa Home Assistant Operating System and Home Assistant Supervised 2022.03 allows a DNS operator to gain knowle…

published 2022-03-07 4 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23995

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

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.

Patch / fix

Exploit prediction

2.90% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/home-assistant/plugin-dns/pull/56 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/home-assistant/plugin-dns/pull/55 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/home-assistant/plugin-dns/issues/70 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/home-assistant/plugin-dns/issues/64 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/home-assistant/plugin-dns/issues/54 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/home-assistant/plugin-dns/issues/53 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/home-assistant/plugin-dns/issues/51 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/home-assistant/plugin-dns/issues/50 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/home-assistant/plugin-dns/issues/20 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/home-assistant/plugin-dns/issues/6 referenced PoC, tagged "exploit" by a source, unverified
  • community.home-assistant.io https://community.home-assistant.io/t/ha-os-dns-setting-configuration-not-respected/356572 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.