CVE-2023-27968

Kernel-memory write via AMD buffer overflow

Published May 8, 2023 · Updated Jan 29, 2025

Buffer overflow in Apple macOS Ventura before 13.3 allows local users to terminate the system or write kernel memory. The AMD component copies data without adequate buffer bounds, but Apple has not disclosed the affected routine or input. Exploitation requires execution of a crafted app; successful abuse can crash the Mac or corrupt kernel memory without disclosing data.

CVSS severity7.1
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Apple macOS Ventura before 13.3 allows local users to terminate the system or write kernel memory. The AMD component copies data without adequate buffer bounds, but Apple has not disclosed the affected routine or input. Exploitation requires execution of a crafted app; successful abuse can crash the Mac or corrupt kernel memory without disclosing data.

The record

CVE
CVE-2023-27968
Published
May 8, 2023
Updated
Jan 29, 2025
Vendor
Apple
Product
macOS
Classifications
CWE-120, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 29, 2025Record 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=unspecified <13.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · macOSversion=unspecified <13.3

Published CVSS scores

7.1CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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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