Is CVE-2026-34205 actively exploited?

No active exploitation of CVE-2026-34205 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34205 be exploited remotely?

Partially. CVE-2026-34205 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2026-34205?

CVE-2026-34205 has a CVSS score of 9.6 (CRITICAL).

HOME VULNERABILITIESCVE-2026-34205

CRITICAL

CVE-2026-34205

CWE-923Published: March 27, 2026· Updated: Mar 30, 2026

9.6

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:5.1th

Official Description

Home Assistant is open source home automation software that puts local control and privacy first. Home Assistant apps (formerly add-ons) configured with host network mode expose unauthenticated endpoints bound to the internal Docker bridge interface to the local network. On Linux, this configuration does not restrict access to the app as intended, allowing any device on the same network to reach these endpoints without authentication. Home Assistant Supervisor 2026.03.02 addresses the issue.

NVD Source

Technical Analysis

CVE-2026-34205 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.