CVE-2026-28840

Local root escalation via PackageKit permissions

Published May 11, 2026 · Updated May 11, 2026

PackageKit permissions in Apple macOS Sonoma before 14.8.7, Sequoia before 15.7.7, and Tahoe before 26.4 allow local users to gain root privileges. Apple has not disclosed which PackageKit permission check is missing or what privileged operation accepts an app's request. Exploitation requires local low-privileged code execution and results in root-level control of the affected Mac.

CVSS severity7.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PackageKit permissions in Apple macOS Sonoma before 14.8.7, Sequoia before 15.7.7, and Tahoe before 26.4 allow local users to gain root privileges. Apple has not disclosed which PackageKit permission check is missing or what privileged operation accepts an app's request. Exploitation requires local low-privileged code execution and results in root-level control of the affected Mac.

The record

CVE
CVE-2026-28840
Published
May 11, 2026
Updated
May 11, 2026
Vendor
Apple
Product
macOS
Classifications
CWE-269, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 11, 2026CVE publishedPublication date reported by the CVE source.
  2. May 11, 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 <14.8.7
  2. Affected versionversion=0 <15.7.7
  3. Affected versionversion=0 <26.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Apple · macOSversion=0 <14.8.7; version=0 <15.7.7; version=0 <26.4

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
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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