CVE-2023-38424

Kernel code execution via undisclosed memory-handling flaw

Published Jul 27, 2023 · Updated Oct 23, 2024

A kernel memory-handling flaw in iOS and iPadOS before 16.6 and macOS Ventura before 13.5 allows attackers to execute kernel code via an app. Apple identifies the locus only as Kernel and says improved memory handling resolved the issue, without disclosing the faulty operation or input. Exploitation requires a user to run an app, after which the app can cross its existing privilege boundary and execute arbitrary code in the kernel.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A kernel memory-handling flaw in iOS and iPadOS before 16.6 and macOS Ventura before 13.5 allows attackers to execute kernel code via an app. Apple identifies the locus only as Kernel and says improved memory handling resolved the issue, without disclosing the faulty operation or input. Exploitation requires a user to run an app, after which the app can cross its existing privilege boundary and execute arbitrary code in the kernel.

The record

CVE
CVE-2023-38424
Published
Jul 27, 2023
Updated
Oct 23, 2024
Vendor
Apple
Product
iOS and iPadOS
Classifications
T1068, T1404
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 23, 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 <16.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <16.6
Apple · macOSversion=unspecified <13.5

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation
T1404Exploitation 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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