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TI-2020-07935 Aliases CVE-2020-9859GHSA-frwv-8c9x-7766

Double free in Apple iOS

Priority CRITICAL 93Exploited in the wildCWE-415Published · 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 · CISA ADP. Fix status from CNA. Impact type from CWE-415 and the CVSS impact.

Summary

A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina 10.15.5 Supplemental Update, tvOS 13.4.6, watchOS 6.2.6. An application may be able to execute arbitrary code with kernel privileges.

Why it matters now

Exploitation Active In CISA KEV since 2021-11-03CISA due date 2022-05-03
EPSS 0.00829 57th percentileScored 2026-11-07
Fix Fixed iOS (Apple): iOS 13.5.1 and iPadOS 13.5.1macOS (Apple): macOS Catalina 10.15.5 Supplemental Update+2 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AppleiOSbefore iOS 13.5.1 and iPadOS 13.5.1iOS 13.5.1 and iPadOS 13.5.1Patch availableCNA
ApplemacOSbefore macOS Catalina 10.15.5 Supplemental UpdatemacOS Catalina 10.15.5 Supplemental UpdatePatch availableCNA
AppletvOSbefore tvOS 13.4.6tvOS 13.4.6Patch availableCNA
ApplewatchOSbefore watchOS 6.2.6watchOS 6.2.6Patch availableCNA
  • iOS VendorApple Affected before iOS 13.5.1 and iPadOS 13.5.1 Fixed in iOS 13.5.1 and iPadOS 13.5.1 Patch available CNA
  • macOS VendorApple Affected before macOS Catalina 10.15.5 Supplemental Update Fixed in macOS Catalina 10.15.5 Supplemental Update Patch available CNA
  • tvOS VendorApple Affected before tvOS 13.4.6 Fixed in tvOS 13.4.6 Patch available CNA
  • watchOS VendorApple Affected before watchOS 6.2.6 Fixed in watchOS 6.2.6 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 13.5.1VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 13.5.1VulnerableApple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*before 10.15.5VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 13.4.6VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 6.2.6VulnerableApple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 13.5.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 13.5.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.15.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 13.4.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 6.2.6 Vulnerable ·Apple

Remediation

  • Fix · CNA iOS (Apple) Fixed in iOS 13.5.1 and iPadOS 13.5.1
  • Fix · CNA macOS (Apple) Fixed in macOS Catalina 10.15.5 Supplemental Update
  • Fix · CNA tvOS (Apple) Fixed in tvOS 13.4.6
  • Fix · CNA watchOS (Apple) Fixed in watchOS 6.2.6

Timeline

  1. 2021-11-03 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2020-9859
  3. 2026-10-03 Alias added: GHSA-frwv-8c9x-7766

References

Advisory 1

  • 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