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Vulnerability Intelligence

CVE-2023-27482

CriticalExploited

A remotely exploitable vulnerability bypassing authentication for accessing the Supervisor API through Home Assistant has been discovered.

Published Mar 8, 2023 · Updated Sep 29, 2026 · Also known as GHSA-2j8f-h4mr-qr25, ROOT-OS-ALPINE-319-CVE-2023-27482

Key Facts

Patch immediately
  • CVE-2023-27482 is a critical-severity vulnerability (CVSS 10.0 v3.1) affecting Home-Assistant, Supervisor (Home-Assistant), rootio-supervisor and 1 more product.
  • It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023. No public exploit code is known.
  • EPSS estimates a 72% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Home-Assistant 2023.3.0, Supervisor 2023.03.1, Supervisor 4.2.5-r40071.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

10.0

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

EPSS (30-day exploit likelihood)

72%

Higher than 99.4% of all scored CVEs

Exploited in the wild

Yes

2 catalog listings

Public exploit code

None known

Get the full CVE-2023-27482 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

homeassistant is an open source home automation tool. A remotely exploitable vulnerability bypassing authentication for accessing the Supervisor API through Home Assistant has been discovered. This impacts all Home Assistant installation types that use the Supervisor 2023.01.1 or older. Installation types, like Home Assistant Container (for example Docker), or Home Assistant Core manually in a Python environment, are not affected. The issue has been mitigated and closed in Supervisor version 2023.03.1, which has been rolled out to all affected installations via the auto-update feature of the Supervisor. This rollout has been completed at the time of publication of this advisory. Home Assistant Core 2023.3.0 included mitigation for this vulnerability. Upgrading to at least that version is thus advised. In case one is not able to upgrade the Home Assistant Supervisor or the Home Assistant Core application at this time, it is advised to not expose your Home Assistant instance to the internet.

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
Industry KEV feedNov 30, 2023n/aNot reported
CIRCL KEVOct 14, 2023n/aNot reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

24 affected entries in total
ProductAffected versionsFixed in
Home-AssistantHome-AssistantSee advisory2023.3.0
SupervisorHome-Assistant>= < 2023.03.32023.03.1
rootio-supervisorrootioSee advisory4.2.5-r40071
core>= < 2023.3.2n/a

Patched Releases

Home-Assistant

2023.3.0

Supervisor

2023.03.1, 4.2.5-r40071, 4.2.5-r40072, 4.2.5-r40073, 4.2.5-r40074, 4.2.5-r40075

rootio-supervisor

4.2.5-r40071, 4.2.5-r40072, 4.2.5-r40073, 4.2.5-r40074, 4.2.5-r40075

Timeline

  1. Publicly disclosed

    Mar 8, 2023

  2. Added to CIRCL KEV

    Oct 14, 2023

  3. Added to Industry KEV feed

    Nov 30, 2023

  4. Last updated

    Sep 29, 2026

Weakness Type

  • CWE-287 Improper Authentication

References

11 more references in the full CVE brief

FAQ

Common Questions.

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