CVE-2026-28838

App sandbox escape

Published Mar 25, 2026 · Updated Mar 25, 2026

Improper access control in Apple macOS Sonoma before 14.8.5, Sequoia before 15.7.5, and Tahoe before 26.4 allows sandbox escape. Apple identifies a permissions issue in CoreServices but does not disclose the permission check or operation that accepts untrusted input. Execution of an app inside the macOS App Sandbox is required; successful exploitation removes sandbox isolation, while further host impact is undisclosed.

CVSS severity5.3
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Apple macOS Sonoma before 14.8.5, Sequoia before 15.7.5, and Tahoe before 26.4 allows sandbox escape. Apple identifies a permissions issue in CoreServices but does not disclose the permission check or operation that accepts untrusted input. Execution of an app inside the macOS App Sandbox is required; successful exploitation removes sandbox isolation, while further host impact is undisclosed.

The record

CVE
CVE-2026-28838
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
Apple
Product
macOS
Classifications
CWE-284, T1068
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <14.8.5
  2. Affected versionversion=0 <15.7.5
  3. Affected versionversion=0 <26.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Apple · macOSversion=0 <14.8.5; version=0 <15.7.5; version=0 <26.4

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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 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
T1068Exploitation for Privilege Escalation

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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