CVE-2026-66061

highpriority · track · 0OT risk · elevatedEPSS 0.002 · 6 %ileEU
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.17% (6th) EPSS
CVSS 7.1 · high
Is it mine?
1 products
Check your exposure
Who says so?
2 sources
cnnvd · enisa_euvd

EPSS · scored 2026-10-28

Home Assistant is open source home automation software focused on local control and privacy. Prior to 2026.5.0, the iOS Companion app treats tag links (NFC or QR) delivered through an OS-level routing mechanism such as iOS universal links as if they were physically scanned, without validating the calling app or prompting the user. As a result, any untrusted app on the device can forward an arbitrary tag to Home Assistant, causing it to execute the associated automation as though a legitimate user had scanned an authorized tag. This allows silent, unattended automation execution by untrusted local callers. This issue has been fixed in version 2026.5.0.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.1
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–7.1

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:Nsecondary · ENISA EU
v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:Nsecondary · security-advisories@github.comexploitability 2.5 · impact 4
v3.16.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-862US
04

affected products (1)

Products and version ranges known to be affected.

05

also known as (2)

Other names and identifiers for this entity.

06

sources

Which sources assert this record, and when.

cnnvdenisa_euvdNVDCVE.orgMITRE
published 2026-08-07modified 2026-10-24
07

references (6)

External citations — patches, advisories, analysis.

scry

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