CVE-2021-30835

Code execution via malicious image processing

Published Oct 19, 2021 · Updated Aug 3, 2024

ImageIO in affected Apple products allows attackers to execute arbitrary code by processing a maliciously crafted image. Apple states only that improved checks corrected the issue and has not published the precise parser locus or the invalid operation performed on image data. Successful exploitation requires user interaction to process the image and executes code with the privileges of the affected process.

CVSS severity7.8
High
EPSS probability3.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

ImageIO in affected Apple products allows attackers to execute arbitrary code by processing a maliciously crafted image. Apple states only that improved checks corrected the issue and has not published the precise parser locus or the invalid operation performed on image data. Successful exploitation requires user interaction to process the image and executes code with the privileges of the affected process.

The record

CVE
CVE-2021-30835
Published
Oct 19, 2021
Updated
Aug 3, 2024
Vendor
Apple
Product
iTunes for Windows
Classifications
T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 19, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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 <12.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · iTunes for Windowsversion=unspecified <12.12
Apple · iOS and iPadOSversion=unspecified <15
Apple · tvOSversion=unspecified <15
Apple · Security Update Catalinaversion=unspecified <2021
Apple · watchOSversion=unspecified <8

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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