CVE-2026-43819

Sensitive user data disclosure via sandbox access flaw

Published Jul 27, 2026 · Updated Jul 27, 2026

Access control failure in Accounts in Apple macOS before 26.6 allows local users to read sensitive user data through an app. Apple states that additional sandbox restrictions correct the Accounts access issue but does not disclose the affected code path or data operation. Execution of an app and user interaction are required, and the documented consequence is limited to disclosure of sensitive user data.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Access control failure in Accounts in Apple macOS before 26.6 allows local users to read sensitive user data through an app. Apple states that additional sandbox restrictions correct the Accounts access issue but does not disclose the affected code path or data operation. Execution of an app and user interaction are required, and the documented consequence is limited to disclosure of sensitive user data.

The record

CVE
CVE-2026-43819
Published
Jul 27, 2026
Updated
Jul 27, 2026
Vendor
Apple
Product
macOS
Classifications
CWE-284, T1005
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 27, 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 <26.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Apple · macOSversion=0 <26.6

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
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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