CVE-2024-40845Network attack vector

Information disclosure via MOV buffer over-read

Published Sep 16, 2024 · Updated Apr 2, 2026

Out-of-bounds read in Apple macOS before 14.7 and before 15 allows remote attackers to disclose memory through a crafted MOV video. VTDecoderXPCService fails to validate user-controlled MOV data before reading past the end of an allocated buffer. Exploitation requires a user to visit a malicious page or open the file; the read exposes process memory, while Apple reports unexpected app termination.

CVSS severity5.5
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Apple macOS before 14.7 and before 15 allows remote attackers to disclose memory through a crafted MOV video. VTDecoderXPCService fails to validate user-controlled MOV data before reading past the end of an allocated buffer. Exploitation requires a user to visit a malicious page or open the file; the read exposes process memory, while Apple reports unexpected app termination.

The record

CVE
CVE-2024-40845
Published
Sep 16, 2024
Updated
Apr 2, 2026
Vendor
Apple
Product
macOS
Classifications
T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 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 <14.7
  2. Affected versionversion=0 <15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · macOSversion=0 <14.7; version=0 <15

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
5.5NVDCVSS: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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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