CVE-2026-64788Network attack vector

Memory corruption via crafted web content

Published Aug 17, 2026 · Updated Aug 18, 2026

Memory corruption in IOGPUFamily in Apple macOS before 26.6.2 allows remote attackers to trigger memory corruption via malicious web content. Apple identifies IOGPUFamily as the affected component and states that the fix improves memory handling, but public records do not disclose the precise code path or memory-safety mistake. Exploitation requires delivery of attacker-controlled web content to a target system, and published records describe memory corruption without confirming code execution or observed exploitation.

CVSS severity5.4
Medium
EPSS probability0.17%
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 IOGPUFamily in Apple macOS before 26.6.2 allows remote attackers to trigger memory corruption via malicious web content. Apple identifies IOGPUFamily as the affected component and states that the fix improves memory handling, but public records do not disclose the precise code path or memory-safety mistake. Exploitation requires delivery of attacker-controlled web content to a target system, and published records describe memory corruption without confirming code execution or observed exploitation.

The record

CVE
CVE-2026-64788
Published
Aug 17, 2026
Updated
Aug 18, 2026
Vendor
Apple
Product
macOS
Classifications
CWE-119, T1203
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

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1203Exploitation for Client Execution

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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