CVE-2019-8703

Local privilege escalation via insufficient entitlement enforcement

Published Dec 23, 2021 · Updated Aug 4, 2024

Kernel privilege escalation in iOS before 13, tvOS before 13, macOS before 10.15, and watchOS before 6 allows local users to gain elevated privileges. The kernel applies insufficient entitlement enforcement to an application, allowing it to cross intended privilege boundaries. Exploitation requires a locally installed application; Apple has not published the affected entitlement, entry point, or resulting privilege level.

CVSS severity9.8
Critical
EPSS probability1.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Kernel privilege escalation in iOS before 13, tvOS before 13, macOS before 10.15, and watchOS before 6 allows local users to gain elevated privileges. The kernel applies insufficient entitlement enforcement to an application, allowing it to cross intended privilege boundaries. Exploitation requires a locally installed application; Apple has not published the affected entitlement, entry point, or resulting privilege level.

The record

CVE
CVE-2019-8703
Published
Dec 23, 2021
Updated
Aug 4, 2024
Vendor
Apple
Product
iOS
Classifications
T1068
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 23, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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 <13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Apple · iOSversion=unspecified <13
Apple · tvOSversion=unspecified <13
Apple · macOSversion=unspecified <10.15
Apple · watchOSversion=unspecified <6

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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 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

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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