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TI-2021-11163 Aliases CVE-2021-30785GHSA-8rmr-f55v-w9w6

Buffer overflow in Apple Security Update - Catalina

Priority LOW 38CWE-120Published · 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-120 and the CVSS impact.

Summary

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security Update 2021-004 Catalina. Processing a maliciously crafted image may lead to arbitrary code execution.

Why it matters now

EPSS 0.01844 79th 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 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 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 · 14

CPEVersionsRoleVendor
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 14.7VulnerableApple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*10.15 – 10.15.6VulnerableApple
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:iphone_os:*:*:*:*:*:*:*:* Versions before 14.7 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions 10.15 – 10.15.6 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
Show 4 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*10.15.7 supplemental_updateVulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*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:10.15.7:supplemental_update:*:*:*:*:*:* Versions 10.15.7 supplemental_update Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 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 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 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 →
  • 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 →
Show 3 more groups
  • 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-2021-30785
  2. 2026-10-03 Alias added: GHSA-8rmr-f55v-w9w6

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 4500 →

Sources

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