Read the docs
TI-2020-07978 Aliases CVE-2020-9905GHSA-xqfm-73wx-f547

Buffer overflow in Apple iOS

Priority LOW 38CWE-120Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

A buffer overflow 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. A remote attacker may be able to cause a denial of service.

Why it matters now

EPSS 0.02575 85th percentileScored 2026-11-07
Fix Fixed iOS (Apple): iOS 13.6 and iPadOS 13.6macOS (Apple): macOS Catalina 10.15.6+1 more product

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
  • 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

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 13.6VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 13.6VulnerableApple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*before 10.15.6VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 13.4.8VulnerableApple
  • 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:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.15.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 13.4.8 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

Fixed in the same release

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

  • Release ·

    Apple macOS macOS Catalina 10.15.6

    43 records Highest priority Priority MEDIUM 5 MEDIUM, 38 LOW

    Other records, highest priority first

    • TI-2020-07979 Improper input validation in Apple iOSPriority MEDIUM 47
    • TI-2020-07971 Apple iOS: A sandboxed process may be able to circumvent sandbox restrictionsPriority MEDIUM 45
    • TI-2020-07993 Path traversal in Apple iOSPriority MEDIUM 43
    Show all 43 records →
  • Release ·

    Apple iOS iOS 13.6 and iPadOS 13.6

    30 records Highest priority Priority MEDIUM 5 MEDIUM, 25 LOW

    Other records, highest priority first

    • TI-2020-07979 Improper input validation in Apple iOSPriority MEDIUM 47
    • TI-2020-07971 Apple iOS: A sandboxed process may be able to circumvent sandbox restrictionsPriority MEDIUM 45
    • TI-2020-07993 Path traversal in Apple iOSPriority MEDIUM 43
    Show all 30 records →
Show 1 more group
  • Release ·

    Apple tvOS tvOS 13.4.8

    24 records Highest priority Priority MEDIUM 2 MEDIUM, 22 LOW

    Other records, highest priority first

    • TI-2020-07958 Buffer overflow in Apple iOSPriority MEDIUM 43
    • TI-2020-07943 Improper certificate validation in Apple iOSPriority MEDIUM 41
    • TI-2020-07951 Out-of-bounds write in Apple iOSPriority LOW 38
    Show all 24 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-9905
  2. 2026-10-03 Alias added: GHSA-xqfm-73wx-f547

References

Advisory 3

  • 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