CVE-2024-40840

Sensitive data disclosure via improper Siri state management

Published Sep 16, 2024 · Updated Apr 2, 2026

Information disclosure in Accessibility in Apple iOS and iPadOS before 18 allows physically proximate attackers to access sensitive data via Siri. Apple attributes the flaw to improper state management but has not disclosed which Accessibility or Siri state transition exposes the data. Exploitation requires physical access to an affected iPhone or iPad, and the published impact is limited to reading sensitive user data.

CVSS severity4.6
Medium
EPSS probability0.27%
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 Accessibility in Apple iOS and iPadOS before 18 allows physically proximate attackers to access sensitive data via Siri. Apple attributes the flaw to improper state management but has not disclosed which Accessibility or Siri state transition exposes the data. Exploitation requires physical access to an affected iPhone or iPad, and the published impact is limited to reading sensitive user data.

The record

CVE
CVE-2024-40840
Published
Sep 16, 2024
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
Unavailable
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2026Record 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=0 <18

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <18

Published CVSS scores

4.6CISA-ADPCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.6NVDCVSS:3.1/AV:P/AC:L/PR:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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