CVE-2025-43439

User fingerprinting via exposed On-device Intelligence data

Published Nov 4, 2025 · Updated Nov 4, 2025

Information disclosure in Apple On-device Intelligence before 26.1 allows local users to fingerprint iOS, iPadOS, and visionOS devices. The component exposes sensitive data to an app, but Apple has not identified the data, API, or operation that made it available. An attacker must run an app locally; the published impact is limited to persistent user or device identification, with no reported data modification or service interruption.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Apple On-device Intelligence before 26.1 allows local users to fingerprint iOS, iPadOS, and visionOS devices. The component exposes sensitive data to an app, but Apple has not identified the data, API, or operation that made it available. An attacker must run an app locally; the published impact is limited to persistent user or device identification, with no reported data modification or service interruption.

The record

CVE
CVE-2025-43439
Published
Nov 4, 2025
Updated
Nov 4, 2025
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-359
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <26.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <26.1
Apple · visionOSversion=unspecified <26.1

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-359Exposure of Private Personal Information to an Unauthorized Actor

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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