CVE-2024-27873

App termination via CoreMedia out-of-bounds write

Published Jul 29, 2024 · Updated Apr 2, 2026

An out-of-bounds write in CoreMedia in Apple iOS, iPadOS, and macOS allows attackers to terminate an app via a malicious video file. CoreMedia writes beyond an allocated buffer while parsing insufficiently validated video input; Apple has not disclosed a narrower parser or routine. Exploitation requires a user to process the file and affects iOS and iPadOS before 16.7.9 or 17.6 and macOS Monterey before 12.7.6, Ventura before 13.6.8, or Sonoma before 14.6.

CVSS severity5.5
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds write in CoreMedia in Apple iOS, iPadOS, and macOS allows attackers to terminate an app via a malicious video file. CoreMedia writes beyond an allocated buffer while parsing insufficiently validated video input; Apple has not disclosed a narrower parser or routine. Exploitation requires a user to process the file and affects iOS and iPadOS before 16.7.9 or 17.6 and macOS Monterey before 12.7.6, Ventura before 13.6.8, or Sonoma before 14.6.

The record

CVE
CVE-2024-27873
Published
Jul 29, 2024
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-787, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

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 <16.7.9
  2. Affected versionversion=0 <17.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <16.7.9; version=0 <17.6
Apple · macOSversion=0 <12.7.6; version=0 <13.6.8; version=0 <14.6

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.

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-787Out-of-bounds Write
T1204.002User Execution: Malicious File
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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