CVE-2020-9790Network attack vector

Arbitrary code execution via ImageIO bounds check

Published Jun 9, 2020 · Updated Aug 4, 2024

Out-of-bounds write in Apple software before the listed 2020 releases allows remote attackers to execute arbitrary code via maliciously crafted images. ImageIO writes beyond a buffer because bounds checking fails while decoding attacker-supplied image data. Exploitation requires a victim or application to process the image, and the resulting code execution can compromise confidentiality, integrity, and availability.

CVSS severity8.8
High
EPSS probability2.48%
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 write in Apple software before the listed 2020 releases allows remote attackers to execute arbitrary code via maliciously crafted images. ImageIO writes beyond a buffer because bounds checking fails while decoding attacker-supplied image data. Exploitation requires a victim or application to process the image, and the resulting code execution can compromise confidentiality, integrity, and availability.

The record

CVE
CVE-2020-9790
Published
Jun 9, 2020
Updated
Aug 4, 2024
Vendor
Apple
Product
iOS
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <iOS 13.5 and iPadOS 13.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOSversion=unspecified <iOS 13.5 and iPadOS 13.5
Apple · iTunes for Windowsversion=unspecified <iTunes 12.10.7 for Windows
Apple · iCloud for Windows (Legacy)version=unspecified <iCloud for Windows 7.19
Apple · iCloud for Windowsversion=unspecified <iCloud for Windows 11.2
Apple · tvOSversion=unspecified <tvOS 13.4.5
Apple · macOSversion=unspecified <macOS Catalina 10.15.5
Apple · watchOSversion=unspecified <watchOS 6.2.5

Published CVSS scores

9.0NVDAV:N/AC:M/Au:N/C:C/I:C/A:C
8.8NVDCVSS:3.1/AV:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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