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TI-2021-11138 Aliases CVE-2021-30760GHSA-4ccr-c6hg-r7x3

Integer overflow in Apple Security Update - Catalina

Priority LOW 37CWE-190Published · 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-190 and the CVSS impact.

Summary

An integer overflow was addressed through improved input validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security Update 2021-005 Mojave, Security Update 2021-004 Catalina. Processing a maliciously crafted font file may lead to arbitrary code execution.

Why it matters now

EPSS 0.01336 71st percentileScored 2026-11-07
Fix Fixed Security Update - Catalina (Apple): 2021iOS (Apple): 14.7+1 more product

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
AppleSecurity Update - Catalinabefore 20212021Patch availableCNA
AppleiOSbefore 14.714.7Patch availableCNA
ApplemacOSbefore 11.511.5Patch availableCNA
ApplemacOSbefore 20212021Patch availableCNA
ApplemacOSbefore 14.714.7Patch availableCNA
ApplemacOSbefore 7.67.6Patch availableCNA
  • Security Update - Catalina VendorApple Affected before 2021 Fixed in 2021 Patch available CNA
  • iOS VendorApple Affected before 14.7 Fixed in 14.7 Patch available CNA
  • macOS VendorApple Affected before 11.5 Fixed in 11.5 Patch available CNA
  • macOS VendorApple Affected before 2021 Fixed in 2021 Patch available CNA
  • macOS VendorApple Affected before 14.7 Fixed in 14.7 Patch available CNA
  • macOS VendorApple Affected before 7.6 Fixed in 7.6 Patch available CNA

CPE configurations NVD · 50

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 14.7VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 14.7VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14:*:*:*:*:*:*:*10.14VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.0:*:*:*:*:*:*:*10.14.0VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.1:*:*:*:*:*:*:*10.14.1VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.2:*:*:*:*:*:*:*10.14.2VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.3:*:*:*:*:*:*:*10.14.3VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.4:*:*:*:*:*:*:*10.14.4VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.5:*:*:*:*:*:*:*10.14.5VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:*:*:*:*:*:*:*10.14.6VulnerableApple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 14.7 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 14.7 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14:*:*:*:*:*:*:* Versions 10.14 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.0:*:*:*:*:*:*:* Versions 10.14.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.1:*:*:*:*:*:*:* Versions 10.14.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.2:*:*:*:*:*:*:* Versions 10.14.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.3:*:*:*:*:*:*:* Versions 10.14.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.4:*:*:*:*:*:*:* Versions 10.14.4 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.5:*:*:*:*:*:*:* Versions 10.14.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:*:*:*:*:*:*:* Versions 10.14.6 Vulnerable ·Apple
Show 40 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:*10.14.6VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-001:*:*:*:*:*:*10.14.6 security_update_2019-001VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:*10.14.6 security_update_2019-002VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:*10.14.6 security_update_2019-004VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:*10.14.6 security_update_2019-005VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:*10.14.6 security_update_2019-006VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:*10.14.6 security_update_2019-007VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:*10.14.6 security_update_2020-001VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:*10.14.6 security_update_2020-002VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-003:*:*:*:*:*:*10.14.6 security_update_2020-003VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-004:*:*:*:*:*:*10.14.6 security_update_2020-004VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-005:*:*:*:*:*:*10.14.6 security_update_2020-005VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-006:*:*:*:*:*:*10.14.6 security_update_2020-006VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-007:*:*:*:*:*:*10.14.6 security_update_2020-007VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-001:*:*:*:*:*:*10.14.6 security_update_2021-001VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-002:*:*:*:*:*:*10.14.6 security_update_2021-002VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-003:*:*:*:*:*:*10.14.6 security_update_2021-003VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-004:*:*:*:*:*:*10.14.6 security_update_2021-004VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update:*:*:*:*:*:*10.14.6 supplemental_updateVulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update_2:*:*:*:*:*:*10.14.6 supplemental_update_2VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15:*:*:*:*:*:*:*10.15VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.1:*:*:*:*:*:*:*10.15.1VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.2:*:*:*:*:*:*:*10.15.2VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.3:*:*:*:*:*:*:*10.15.3VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.4:*:*:*:*:*:*:*10.15.4VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.5:*:*:*:*:*:*:*10.15.5VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.6:*:*:*:*:*:*:*10.15.6VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.6:supplemental_update:*:*:*:*:*:*10.15.6 supplemental_updateVulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*10.15.7VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*10.15.7 security_update_2020VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*10.15.7 security_update_2020-001VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*10.15.7 security_update_2020-005VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*10.15.7 security_update_2020-007VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*10.15.7 security_update_2021-001VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*10.15.7 security_update_2021-002VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*10.15.7 security_update_2021-003VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*10.15.7 supplemental_updateVulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*11.0 to before 11.5VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 14.7VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 7.6VulnerableApple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:* Versions 10.14.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-001:*:*:*:*:*:* Versions 10.14.6 security_update_2019-001 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:* Versions 10.14.6 security_update_2019-002 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:* Versions 10.14.6 security_update_2019-004 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:* Versions 10.14.6 security_update_2019-005 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:* Versions 10.14.6 security_update_2019-006 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:* Versions 10.14.6 security_update_2019-007 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:* Versions 10.14.6 security_update_2020-001 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:* Versions 10.14.6 security_update_2020-002 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-003:*:*:*:*:*:* Versions 10.14.6 security_update_2020-003 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-004:*:*:*:*:*:* Versions 10.14.6 security_update_2020-004 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-005:*:*:*:*:*:* Versions 10.14.6 security_update_2020-005 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-006:*:*:*:*:*:* Versions 10.14.6 security_update_2020-006 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-007:*:*:*:*:*:* Versions 10.14.6 security_update_2020-007 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-001:*:*:*:*:*:* Versions 10.14.6 security_update_2021-001 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-002:*:*:*:*:*:* Versions 10.14.6 security_update_2021-002 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-003:*:*:*:*:*:* Versions 10.14.6 security_update_2021-003 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2021-004:*:*:*:*:*:* Versions 10.14.6 security_update_2021-004 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update:*:*:*:*:*:* Versions 10.14.6 supplemental_update Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update_2:*:*:*:*:*:* Versions 10.14.6 supplemental_update_2 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15:*:*:*:*:*:*:* Versions 10.15 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.1:*:*:*:*:*:*:* Versions 10.15.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.2:*:*:*:*:*:*:* Versions 10.15.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.3:*:*:*:*:*:*:* Versions 10.15.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.4:*:*:*:*:*:*:* Versions 10.15.4 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.5:*:*:*:*:*:*:* Versions 10.15.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.6:*:*:*:*:*:*:* Versions 10.15.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.6:supplemental_update:*:*:*:*:*:* Versions 10.15.6 supplemental_update Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:* Versions 10.15.7 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:* Versions 10.15.7 security_update_2020 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:* Versions 10.15.7 security_update_2020-001 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:* Versions 10.15.7 security_update_2020-005 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:* Versions 10.15.7 security_update_2020-007 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:* Versions 10.15.7 security_update_2021-001 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:* Versions 10.15.7 security_update_2021-002 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:* Versions 10.15.7 security_update_2021-003 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:* Versions 10.15.7 supplemental_update Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 11.0 to before 11.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 14.7 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 7.6 Vulnerable ·Apple

Remediation

  • Fix · CNA Security Update - Catalina (Apple) Fixed in 2021
  • Fix · CNA iOS (Apple) Fixed in 14.7
  • Fix · CNA macOS (Apple) Fixed in 11.5
  • Fix · CNA macOS (Apple) Fixed in 2021
  • Fix · CNA macOS (Apple) Fixed in 14.7
  • Fix · CNA macOS (Apple) Fixed in 7.6

Fixed in the same release

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

  • Release ·

    Apple macOS 2021

    100 records Highest priority Priority HIGH 1 HIGH, 12 MEDIUM, 87 LOW

    Other records, highest priority first

    • TI-2021-11042 Missing authorization in Apple macOSPriority HIGH 82
    • TI-2021-11104 Apple macOS: An attacker in a privileged network position may be able to leak sensitive…Priority MEDIUM 50
    • TI-2021-11181 Out-of-bounds write in Apple Security Update - CatalinaPriority MEDIUM 48
    Show all 100 records →
  • Release ·

    Apple macOS 11.5

    35 records Highest priority Priority MEDIUM 6 MEDIUM, 29 LOW

    Other records, highest priority first

    • TI-2021-11181 Out-of-bounds write in Apple Security Update - CatalinaPriority MEDIUM 48
    • TI-2021-11171 Apple Security Update - Catalina: An application may be able to execute arbitrary code…Priority MEDIUM 48
    • TI-2021-11176 Out-of-bounds write in Apple Security Update - CatalinaPriority MEDIUM 42
    Show all 35 records →
Show 4 more groups
  • Release ·

    Apple iOS 14.7

    29 records Highest priority Priority MEDIUM 5 MEDIUM, 24 LOW

    Other records, highest priority first

    • TI-2021-11176 Out-of-bounds write in Apple Security Update - CatalinaPriority MEDIUM 42
    • TI-2021-11174 Apple iOS: Processing maliciously crafted web content may lead to code executionPriority MEDIUM 42
    • TI-2021-11172 Use after free in Apple iOSPriority MEDIUM 42
    Show all 29 records →
  • Release ·

    Apple Security Update - Catalina 2021

    22 records Highest priority Priority MEDIUM 3 MEDIUM, 19 LOW

    Other records, highest priority first

    • TI-2021-11181 Out-of-bounds write in Apple Security Update - CatalinaPriority MEDIUM 48
    • TI-2021-11171 Apple Security Update - Catalina: An application may be able to execute arbitrary code…Priority MEDIUM 48
    • TI-2021-11176 Out-of-bounds write in Apple Security Update - CatalinaPriority MEDIUM 42
    Show all 22 records →
  • Release ·

    Apple macOS 7.6

    16 records Highest priority Priority MEDIUM 3 MEDIUM, 13 LOW

    Other records, highest priority first

    • TI-2021-11174 Apple iOS: Processing maliciously crafted web content may lead to code executionPriority MEDIUM 42
    • TI-2021-11172 Use after free in Apple iOSPriority MEDIUM 42
    • TI-2021-11136 Type confusion in Apple iOSPriority MEDIUM 41
    Show all 16 records →
  • Release ·

    Apple macOS 14.7

    15 records Highest priority Priority MEDIUM 3 MEDIUM, 12 LOW

    Other records, highest priority first

    • TI-2021-11174 Apple iOS: Processing maliciously crafted web content may lead to code executionPriority MEDIUM 42
    • TI-2021-11172 Use after free in Apple iOSPriority MEDIUM 42
    • TI-2021-11136 Type confusion in Apple iOSPriority MEDIUM 41
    Show all 15 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-30760
  2. 2026-10-03 Alias added: GHSA-4ccr-c6hg-r7x3

References

Advisory 6

  • 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