CVE-2024-27878

Kernel code execution via ASP TCP buffer overflow

Published Jul 29, 2024 · Updated Apr 2, 2026

Buffer overflow in ASP TCP in Apple macOS before 14.6 allows local users to execute arbitrary code with kernel privileges. Apple has not disclosed the affected ASP TCP routine, buffer operation, or attacker-controlled input that overruns memory. The published CISA assessment requires high privileges and user interaction; successful memory corruption executes code in the kernel.

CVSS severity6.5
Medium
EPSS probability0.33%
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 ASP TCP in Apple macOS before 14.6 allows local users to execute arbitrary code with kernel privileges. Apple has not disclosed the affected ASP TCP routine, buffer operation, or attacker-controlled input that overruns memory. The published CISA assessment requires high privileges and user interaction; successful memory corruption executes code in the kernel.

The record

CVE
CVE-2024-27878
Published
Jul 29, 2024
Updated
Apr 2, 2026
Vendor
Apple
Product
macOS
Classifications
CWE-120, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 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 <14.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Apple · macOSversion=0 <14.6

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/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.

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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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1068Exploitation for Privilege Escalation

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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