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TI-2020-16987 Aliases CVE-2020-27932GHSA-f3wv-rx3x-v6fh

Type confusion in Apple watchOS

Priority CRITICAL 93Exploited in the wildCWE-843Published · 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 · CISA ADP. Fix status from CNA. Impact type from CWE-843 and the CVSS impact.

Summary

A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. A malicious 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 0.10337 95th percentileScored 2026-11-07
Fix Fixed watchOS (Apple): 7.1iOS and iPadOS (Apple): 14.2+1 more product

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
ApplewatchOSbefore 7.17.1Patch availableCNA
AppleiOS and iPadOSbefore 14.214.2Patch availableCNA
ApplemacOSbefore 11.011.0Patch availableCNA
ApplemacOSbefore 12.412.4Patch availableCNA
ApplemacOSbefore 6.26.2Patch availableCNA
ApplemacOSbefore 5.35.3Patch availableCNA
ApplemacOSbefore 20202020Patch availableCNA
ApplemacOSbefore 10.1510.15Patch availableCNA
  • watchOS VendorApple Affected before 7.1 Fixed in 7.1 Patch available CNA
  • iOS and iPadOS VendorApple Affected before 14.2 Fixed in 14.2 Patch available CNA
  • macOS VendorApple Affected before 11.0 Fixed in 11.0 Patch available CNA
  • macOS VendorApple Affected before 12.4 Fixed in 12.4 Patch available CNA
  • macOS VendorApple Affected before 6.2 Fixed in 6.2 Patch available CNA
  • macOS VendorApple Affected before 5.3 Fixed in 5.3 Patch available CNA
  • macOS VendorApple Affected before 2020 Fixed in 2020 Patch available CNA
  • macOS VendorApple Affected before 10.15 Fixed in 10.15 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:*before 11.5VulnerableApple
cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:*before 12.11VulnerableApple
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 14.2VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 12.4.9; 14.0 to before 14.2VulnerableApple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*before 10.15.7VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*11.0 to before 11.0.1VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 5.3.9; 6.0 to before 6.2.9; 7.0 to before 7.1VulnerableApple
  • cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:* Versions before 11.5 Vulnerable ·Apple
  • cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:* Versions before 12.11 Vulnerable ·Apple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 14.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 12.4.9; 14.0 to before 14.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.15.7 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 11.0 to before 11.0.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 5.3.9; 6.0 to before 6.2.9; 7.0 to before 7.1 Vulnerable ·Apple

Remediation

  • Fix · CNA watchOS (Apple) Fixed in 7.1
  • Fix · CNA iOS and iPadOS (Apple) Fixed in 14.2
  • Fix · CNA macOS (Apple) Fixed in 11.0
  • Fix · CNA macOS (Apple) Fixed in 12.4
  • Fix · CNA macOS (Apple) Fixed in 6.2
  • Fix · CNA macOS (Apple) Fixed in 5.3
  • Fix · CNA macOS (Apple) Fixed in 2020
  • Fix · CNA macOS (Apple) Fixed in 10.15

Fixed in the same release

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

  • Release ·

    Apple macOS 11.0

    45 records Highest priority Priority CRITICAL 2 CRITICAL, 1 HIGH, 4 MEDIUM, 38 LOW

    Other records, highest priority first

    • TI-2020-16985 Out-of-bounds write in Apple watchOSPriority CRITICAL 93
    • TI-2020-17004 Apple watchOS: A malicious application may be able to disclose kernel memoryPriority HIGH 82
    • TI-2020-08068 Out-of-bounds write in Apple macOSPriority MEDIUM 45
    Show all 45 records →
  • Release ·

    Apple iOS and iPadOS 14.2

    22 records Highest priority Priority CRITICAL 2 CRITICAL, 1 HIGH, 1 MEDIUM, 18 LOW

    Other records, highest priority first

    • TI-2020-16985 Out-of-bounds write in Apple watchOSPriority CRITICAL 93
    • TI-2020-17004 Apple watchOS: A malicious application may be able to disclose kernel memoryPriority HIGH 82
    • TI-2020-16968 Integer overflow in Apple watchOSPriority MEDIUM 40
    Show all 22 records →
Show 3 more groups
  • Release ·

    Apple watchOS 7.1

    18 records Highest priority Priority CRITICAL 2 CRITICAL, 1 HIGH, 1 MEDIUM, 14 LOW

    Other records, highest priority first

    • TI-2020-16985 Out-of-bounds write in Apple watchOSPriority CRITICAL 93
    • TI-2020-17004 Apple watchOS: A malicious application may be able to disclose kernel memoryPriority HIGH 82
    • TI-2020-16968 Integer overflow in Apple watchOSPriority MEDIUM 40
    Show all 18 records →
  • Release ·

    Apple macOS 10.15

    8 records Highest priority Priority CRITICAL 2 CRITICAL, 1 HIGH, 5 LOW

    Other records, highest priority first

    • TI-2020-16985 Out-of-bounds write in Apple watchOSPriority CRITICAL 93
    • TI-2020-17004 Apple watchOS: A malicious application may be able to disclose kernel memoryPriority HIGH 82
    • TI-2020-08051 Use after free in Apple tvOSPriority LOW 37
    Show all 8 records →
  • Release ·

    Apple macOS 12.4, 2020 and 2 more versions

    3 records Highest priority Priority CRITICAL 2 CRITICAL, 1 HIGH

    Other records, highest priority first

    • TI-2020-16985 Out-of-bounds write in Apple watchOSPriority CRITICAL 93
    • TI-2020-17004 Apple watchOS: A malicious application may be able to disclose kernel memoryPriority HIGH 82
    Show all 3 records →

Timeline

  1. 2021-11-03 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2020-27932
  3. 2026-10-03 Alias added: GHSA-f3wv-rx3x-v6fh

References

Advisory 10

  • TI-2019-06084 Type confusion in Apple iOS KEVCVSS 3.1HIGH 8.8
  • 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
  • TI-2019-06176 Out-of-bounds write in Apple iOS CVSS 3.1CRITICAL 9.8
See all 448 →

Sources

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