CVE WatchJul 21, 2026

CVE-2026-64825

Home Assistant Core before 2026.6.0 contains a path traversal vulnerability that allows unauthenticated attackers to write arbitrary files t

CVSS

9.3

Critical

EPSS

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KEV

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Exploit Today

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0-100

Published: Jul 21, 2026 · Last modified: Jul 21, 2026 · CWE-22

EPSS · 30d

Not enough EPSS history yet.

Technical description

Home Assistant Core before 2026.6.0 contains a path traversal vulnerability that allows unauthenticated attackers to write arbitrary files to any directory on the host filesystem by uploading a crafted backup archive during the initial onboarding window. Attackers can manipulate the 'name' field inside the uploaded archive's backup.json to supply an absolute path, causing pathlib.Path.__truediv__ to discard the configured backup directory prefix and write attacker-controlled content to arbitrary locations, with full filesystem access when the process runs as root.

Official references

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CVECVSSEPSSKEVRExploitTitleMod.

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