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TI-2020-08009 Aliases CVE-2020-9936GHSA-4c35-9qwv-fj5v

Out-of-bounds write in Apple iOS

Priority LOW 37CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. Processing a maliciously crafted image may lead to arbitrary code execution.

Why it matters now

EPSS 0.01324 71st percentileScored 2026-11-07
Fix Fixed iOS (Apple): iOS 13.6 and iPadOS 13.6macOS (Apple): macOS Catalina 10.15.6+5 more products

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
AppleiOSbefore iOS 13.6 and iPadOS 13.6iOS 13.6 and iPadOS 13.6Patch availableCNA
ApplemacOSbefore macOS Catalina 10.15.6macOS Catalina 10.15.6Patch availableCNA
AppletvOSbefore tvOS 13.4.8tvOS 13.4.8Patch availableCNA
ApplewatchOSbefore watchOS 6.2.8watchOS 6.2.8Patch availableCNA
AppleiTunes for Windowsbefore iTunes 12.10.8 for WindowsiTunes 12.10.8 for WindowsPatch availableCNA
AppleiCloud for Windowsbefore iCloud for Windows 11.3iCloud for Windows 11.3Patch availableCNA
AppleiCloud for Windows (Legacy)before iCloud for Windows 7.20iCloud for Windows 7.20Patch availableCNA
  • iOS VendorApple Affected before iOS 13.6 and iPadOS 13.6 Fixed in iOS 13.6 and iPadOS 13.6 Patch available CNA
  • macOS VendorApple Affected before macOS Catalina 10.15.6 Fixed in macOS Catalina 10.15.6 Patch available CNA
  • tvOS VendorApple Affected before tvOS 13.4.8 Fixed in tvOS 13.4.8 Patch available CNA
  • watchOS VendorApple Affected before watchOS 6.2.8 Fixed in watchOS 6.2.8 Patch available CNA
  • iTunes for Windows VendorApple Affected before iTunes 12.10.8 for Windows Fixed in iTunes 12.10.8 for Windows Patch available CNA
  • iCloud for Windows VendorApple Affected before iCloud for Windows 11.3 Fixed in iCloud for Windows 11.3 Patch available CNA
  • iCloud for Windows (Legacy) VendorApple Affected before iCloud for Windows 7.20 Fixed in iCloud for Windows 7.20 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:*before 7.20; 11.0 to before 11.3VulnerableApple
cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:*before 12.10.8VulnerableApple
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*before 13.1.2VulnerableApple
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 13.6VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 13.6VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 13.4.8VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 6.2.8VulnerableApple
  • cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:* Versions before 7.20; 11.0 to before 11.3 Vulnerable ·Apple
  • cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:* Versions before 12.10.8 Vulnerable ·Apple
  • cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 13.1.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 13.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 13.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 13.4.8 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 6.2.8 Vulnerable ·Apple

Remediation

  • Fix · CNA iOS (Apple) Fixed in iOS 13.6 and iPadOS 13.6
  • Fix · CNA macOS (Apple) Fixed in macOS Catalina 10.15.6
  • Fix · CNA tvOS (Apple) Fixed in tvOS 13.4.8
  • Fix · CNA watchOS (Apple) Fixed in watchOS 6.2.8
  • Fix · CNA iTunes for Windows (Apple) Fixed in iTunes 12.10.8 for Windows
  • Fix · CNA iCloud for Windows (Apple) Fixed in iCloud for Windows 11.3
  • Fix · CNA iCloud for Windows (Legacy) (Apple) Fixed in iCloud for Windows 7.20

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apple iOS iOS 13.6 and iPadOS 13.6

    28 records Highest priority Priority CRITICAL 1 CRITICAL, 1 HIGH, 4 MEDIUM, 22 LOW

    Other records, highest priority first

    • TI-2020-07980 Out-of-bounds write in Apple iOSPriority CRITICAL 93
    • TI-2020-08007 An issue existed in the handling of environment variables.Priority HIGH 82
    • TI-2020-07969 Use after free in Apple iOSPriority MEDIUM 49
    Show all 28 records →
  • Release ·

    Apple tvOS tvOS 13.4.8

    23 records Highest priority Priority CRITICAL 1 CRITICAL, 5 MEDIUM, 17 LOW

    Other records, highest priority first

    Show all 23 records →
Show 3 more groups
  • Release ·

    Apple watchOS watchOS 6.2.8

    21 records Highest priority Priority MEDIUM 4 MEDIUM, 17 LOW

    Other records, highest priority first

    Show all 21 records →
  • Release ·

    Apple macOS macOS Catalina 10.15.6

    15 records Highest priority Priority HIGH 1 HIGH, 3 MEDIUM, 11 LOW

    Other records, highest priority first

    • TI-2020-08007 An issue existed in the handling of environment variables.Priority HIGH 82
    • TI-2020-07991 Out-of-bounds read in Apple macOSPriority MEDIUM 48
    • TI-2020-07940 Apple macOS: An application may be able to execute arbitrary code with kernel privilegesPriority MEDIUM 47
    Show all 15 records →
  • Release ·

    Apple iCloud for Windows, iCloud for Windows (Legacy), iTunes for Windows iCloud for Windows 11.3, iCloud for Windows 7.20, iTunes 12.10.8 for Windows

    9 records Highest priority Priority MEDIUM 3 MEDIUM, 6 LOW

    Other records, highest priority first

    • TI-2020-07969 Use after free in Apple iOSPriority MEDIUM 49
    • TI-2020-07967 Use after free in Apple iOSPriority MEDIUM 43
    • TI-2020-07983 Apple iOS: A malicious attacker with arbitrary read and write capability may be able to…Priority MEDIUM 42
    Show all 9 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-9936
  2. 2026-10-03 Alias added: GHSA-4c35-9qwv-fj5v

References

Advisory 7

  • TI-2019-06084 Type confusion in Apple iOS KEVCVSS 3.1HIGH 8.8
  • TI-2020-16987 Type confusion in Apple watchOS KEVCVSS 3.1HIGH 7.8
  • TI-2020-07926 Apple iOS: A remote attacker may be able to cause arbitrary code execution CVSS 3.1CRITICAL 9.8
  • TI-2018-03187 Memory corruption in Apple WebKit CVSS 3.1HIGH 8.8
  • TI-2018-03118 Memory corruption in Apple WebKit CVSS 3.0HIGH 8.8
  • TI-2018-03361 Memory corruption in iOS, tvOS, watchOS, Safari, iTunes for Windows, iCloud for Windows CVSS 3.0HIGH 8.8
See all 448 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences