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CVE-2026-64825

Home Assistant Core < 2026.6.0 Path Traversal File Write via Backup Upload

Published: Jul 21, 2026Updated: Jul 21, 2026 Sources: CVE List NVDCWE-22
9.3CRITICAL
NVD MITRE
EPSS Score
0.5%
Top 60.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:NI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:LAvailability
Low
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Weaknesses

CWE-22

Affected Products

home-assistant
oss-projectaka home assistant, home-assistant.io, homeassistant
Home Assistant CoreOn-prem
ICS / OT / IoT / smart-home

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://github.com/home-assistant/core/commit/567fe858289876b68b8162a77bd46e1e1af79752
github.com
https://github.com/home-assistant/core/pull/172368
github.com
https://github.com/home-assistant/core/releases/tag/2026.6.0
github.com
and 1 more references View all →

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