CVE-2023-42878

Sensitive-data disclosure via incomplete log redaction

Published Feb 21, 2024 · Updated Nov 4, 2025

Apple Share Sheet information disclosure in iOS and iPadOS before 17.1, macOS before 14.1, and watchOS before 10.1 allows attackers to read sensitive user data. Share Sheet writes private data to log entries without sufficient redaction, making that data available to another app through local log access. Exploitation requires a locally installed app; Apple has not disclosed the specific data fields or log-access path.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Apple Share Sheet information disclosure in iOS and iPadOS before 17.1, macOS before 14.1, and watchOS before 10.1 allows attackers to read sensitive user data. Share Sheet writes private data to log entries without sufficient redaction, making that data available to another app through local log access. Exploitation requires a locally installed app; Apple has not disclosed the specific data fields or log-access path.

The record

CVE
CVE-2023-42878
Published
Feb 21, 2024
Updated
Nov 4, 2025
Vendor
Apple
Product
iOS and iPadOS
Classifications
T1005
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 21, 2024CVE 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 <17.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Apple · iOS and iPadOSversion=unspecified <17.1
Apple · macOSversion=unspecified <14.1
Apple · watchOSversion=unspecified <10.1

Published CVSS scores

No CVSS assessment is available in this record.

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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1005Data from Local System

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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