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TI-2020-03359 Aliases CVE-2020-3857GHSA-g5hr-56gw-qv92

Out-of-bounds write in Apple iOS

Priority LOW 34CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
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

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2. An application may be able to execute arbitrary code with system privileges.

Why it matters now

EPSS 0.0037 31st percentileScored 2026-11-07
Fix Fixed iOS (Apple): iOS 13.3.1 and iPadOS 13.3.1macOS (Apple): macOS Catalina 10.15.3+2 more products

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
AppleiOSbefore iOS 13.3.1 and iPadOS 13.3.1iOS 13.3.1 and iPadOS 13.3.1Patch availableCNA
ApplemacOSbefore macOS Catalina 10.15.3macOS Catalina 10.15.3Patch availableCNA
AppletvOSbefore tvOS 13.3.1tvOS 13.3.1Patch availableCNA
ApplewatchOSbefore watchOS 6.1.2watchOS 6.1.2Patch availableCNA
  • iOS VendorApple Affected before iOS 13.3.1 and iPadOS 13.3.1 Fixed in iOS 13.3.1 and iPadOS 13.3.1 Patch available CNA
  • macOS VendorApple Affected before macOS Catalina 10.15.3 Fixed in macOS Catalina 10.15.3 Patch available CNA
  • tvOS VendorApple Affected before tvOS 13.3.1 Fixed in tvOS 13.3.1 Patch available CNA
  • watchOS VendorApple Affected before watchOS 6.1.2 Fixed in watchOS 6.1.2 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 13.3.1VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 13.3.1VulnerableApple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*before 10.15.3VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 13.3.1VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 6.1.2VulnerableApple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 13.3.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 13.3.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.15.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 13.3.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 6.1.2 Vulnerable ·Apple

Remediation

  • Fix · CNA iOS (Apple) Fixed in iOS 13.3.1 and iPadOS 13.3.1
  • Fix · CNA macOS (Apple) Fixed in macOS Catalina 10.15.3
  • Fix · CNA tvOS (Apple) Fixed in tvOS 13.3.1
  • Fix · CNA watchOS (Apple) Fixed in watchOS 6.1.2

Fixed in the same release

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

  • Release ·

    Apple iOS iOS 13.3.1 and iPadOS 13.3.1

    25 records Highest priority Priority CRITICAL 1 CRITICAL, 2 MEDIUM, 22 LOW

    Other records, highest priority first

    Show all 25 records →
  • Release ·

    Apple macOS macOS Catalina 10.15.3

    23 records Highest priority Priority CRITICAL 1 CRITICAL, 1 MEDIUM, 21 LOW

    Other records, highest priority first

    Show all 23 records →
Show 2 more groups
  • Release ·

    Apple watchOS watchOS 6.1.2

    16 records Highest priority Priority CRITICAL 1 CRITICAL, 1 MEDIUM, 14 LOW

    Other records, highest priority first

    Show all 16 records →
  • Release ·

    Apple tvOS tvOS 13.3.1

    15 records Highest priority Priority CRITICAL 1 CRITICAL, 2 MEDIUM, 12 LOW

    Other records, highest priority first

    Show all 15 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-3857
  2. 2026-10-03 Alias added: GHSA-g5hr-56gw-qv92

References

Advisory 4

  • TI-2025-28008 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-22441 Apple iOS and iPadOS: An attacker with arbitrary read and write capability may be able to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-22440 Memory corruption in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-17951 Out-of-bounds write in Apple Safari KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-17847 Use after free in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
  • TI-2022-06854 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
See all 2382 →

Sources

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