CVE-2026-84512

Kernel memory corruption via malicious disk image

Published Sep 14, 2026 · Updated Sep 14, 2026

Buffer overflow in Apple macOS allows attackers to crash the system or corrupt kernel memory by mounting a crafted disk image. Apple attributes the flaw to insufficient bounds checking but does not identify the component or operation that overruns its buffer. A crafted disk image must be mounted; affected releases are macOS Sequoia before 15.8, macOS Tahoe before 26.7, and macOS Golden Gate before 27.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Buffer overflow in Apple macOS allows attackers to crash the system or corrupt kernel memory by mounting a crafted disk image. Apple attributes the flaw to insufficient bounds checking but does not identify the component or operation that overruns its buffer. A crafted disk image must be mounted; affected releases are macOS Sequoia before 15.8, macOS Tahoe before 26.7, and macOS Golden Gate before 27.

The record

CVE
CVE-2026-84512
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Apple
Product
macOS
Classifications
T1204.002
Attack vector
Unavailable
Privileges
Unavailable

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <15.8
  2. Affected versionversion=0 <26.7
  3. Affected versionversion=0 <27

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Apple · macOSversion=0 <15.8; version=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.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1204.002Malicious File

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo