CVE-2025-43338

App crash or memory corruption via malformed media

Published Nov 4, 2025 · Updated Nov 4, 2025

Out-of-bounds access in ImageIO in Apple iOS, iPadOS, and macOS allows attackers to crash apps or corrupt process memory via media files. ImageIO performs insufficient bounds checking while parsing attacker-controlled media data, allowing access beyond the intended buffer. Exploitation requires a targeted process to parse a malicious media file; Apple has not disclosed whether memory corruption enables code execution.

CVSS severity7.1
High
EPSS probability0.24%
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 access in ImageIO in Apple iOS, iPadOS, and macOS allows attackers to crash apps or corrupt process memory via media files. ImageIO performs insufficient bounds checking while parsing attacker-controlled media data, allowing access beyond the intended buffer. Exploitation requires a targeted process to parse a malicious media file; Apple has not disclosed whether memory corruption enables code execution.

The record

CVE
CVE-2025-43338
Published
Nov 4, 2025
Updated
Nov 4, 2025
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-79, T1204.002
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

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <26
Apple · macOSversion=unspecified <14.8

Published CVSS scores

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

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.002Malicious File

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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