CVE-2026-65343Network attack vector

System crash via kernel use-after-free

Published Aug 17, 2026 · Updated Aug 18, 2026

Use-after-free in the Kernel in Apple macOS before 26.6.2 allows remote attackers to crash the system via unspecified input. Apple attributes the flaw to improper memory management in a kernel code path that reuses freed memory, but public records do not identify the specific function or trigger. Published records state remote reachability, and the disclosed impact is bounded to unexpected system termination rather than code execution or data access for this CVE.

CVSS severity7.5
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Kernel in Apple macOS before 26.6.2 allows remote attackers to crash the system via unspecified input. Apple attributes the flaw to improper memory management in a kernel code path that reuses freed memory, but public records do not identify the specific function or trigger. Published records state remote reachability, and the disclosed impact is bounded to unexpected system termination rather than code execution or data access for this CVE.

The record

CVE
CVE-2026-65343
Published
Aug 17, 2026
Updated
Aug 18, 2026
Vendor
Apple
Product
macOS
Classifications
CWE-416
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 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 <26.6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · macOSversion=0 <26.6.2

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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