CVE-2025-43385

Code execution via unchecked USD heap copy

Published Nov 4, 2025 · Updated Nov 4, 2025

Heap-based buffer overflow in Apple Model I/O allows attackers to execute code via a maliciously crafted USD media file. The importMeshes path copies user-controlled data into a heap buffer without validating its length against the destination bounds. Exploitation requires interaction with the USD library and runs code in the current process; failed attempts can terminate the app or corrupt its memory.

CVSS severity7.8
High
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Apple Model I/O allows attackers to execute code via a maliciously crafted USD media file. The importMeshes path copies user-controlled data into a heap buffer without validating its length against the destination bounds. Exploitation requires interaction with the USD library and runs code in the current process; failed attempts can terminate the app or corrupt its memory.

The record

CVE
CVE-2025-43385
Published
Nov 4, 2025
Updated
Nov 4, 2025
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-125, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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 <26.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <26.1
Apple · visionOSversion=unspecified <26.1
Apple · tvOSversion=unspecified <26.1
Apple · macOSversion=unspecified <15.7

Published CVSS scores

7.8Zero Day InitiativeCVSS:3.1/AV:L/AC:L/PR:N/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.

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-125Out-of-bounds Read
T1204.002Malicious 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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