CVE-2026-43808

System termination via Kernel use-after-free

Published Sep 14, 2026 · Updated Sep 14, 2026

Use-after-free in the Kernel in Apple iOS and iPadOS, macOS, tvOS, and watchOS before 26.6 allows local users to crash the system. Apple has not disclosed the affected Kernel routine or the lifetime error that leaves freed memory reachable. Successful exploitation requires an app to execute on the device and results in unexpected system termination, with no reported confidentiality or integrity impact.

CVSS severityUnavailable
Unscored
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Use-after-free in the Kernel in Apple iOS and iPadOS, macOS, tvOS, and watchOS before 26.6 allows local users to crash the system. Apple has not disclosed the affected Kernel routine or the lifetime error that leaves freed memory reachable. Successful exploitation requires an app to execute on the device and results in unexpected system termination, with no reported confidentiality or integrity impact.

The record

CVE
CVE-2026-43808
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 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 privilegesauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <26.6
Apple · tvOSversion=0 <26.6
Apple · macOSversion=0 <26.6
Apple · watchOSversion=0 <26.6

Published CVSS scores

No CVSS assessment is available in this record.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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