CVE-2026-86924

System termination via malformed accessory input

Published Sep 14, 2026 · Updated Sep 14, 2026

Memory corruption in MobileAccessoryUpdater in iOS, iPadOS, and macOS before 26.7 and before 27 allows physically proximate attackers to terminate the system. MobileAccessoryUpdater insufficiently validates data received from a connected accessory before using it in memory-sensitive processing. Exploitation requires connecting a malicious accessory, and Apple documents system termination rather than code execution or data access.

CVSS severityUnavailable
Unscored
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in MobileAccessoryUpdater in iOS, iPadOS, and macOS before 26.7 and before 27 allows physically proximate attackers to terminate the system. MobileAccessoryUpdater insufficiently validates data received from a connected accessory before using it in memory-sensitive processing. Exploitation requires connecting a malicious accessory, and Apple documents system termination rather than code execution or data access.

The record

CVE
CVE-2026-86924
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
T1200
Attack vector
physical
Privileges
unauthenticated

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 <26.7
  2. Affected versionversion=0 <27

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <26.7; version=0 <27
Apple · macOSversion=0 <26.7; version=0 <27

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1200Hardware Additions

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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