Read the docs
TI-2026-16673 Aliases CVE-2026-20616GHSA-6xrf-46c8-4wmj

Out-of-bounds write in Apple iOS and iPadOS

Priority MEDIUM 41CWE-787Published · Updated

Key facts

Attack vector
Network
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-787 and the CVSS impact.

Summary

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, macOS Sonoma 14.8.4, macOS Tahoe 26.3, visionOS 26.3. Processing a maliciously crafted USD file may lead to unexpected app termination.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00658 51st percentileScored 2026-11-07
Fix Fixed iOS and iPadOS (Apple): 18.7.5macOS (Apple): 14.8.4, 26.3+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
AppleiOS and iPadOSbefore 18.7.518.7.5Patch availableCNA
ApplemacOSbefore 14.8.4; before 26.314.8.4, 26.3Patch availableCNA
ApplevisionOSbefore 26.326.3Patch availableCNA
  • iOS and iPadOS VendorApple Affected before 18.7.5 Fixed in 18.7.5 Patch available CNA
  • macOS VendorApple Affected before 14.8.4; before 26.3 Fixed in 14.8.4, 26.3 Patch available CNA
  • visionOS VendorApple Affected before 26.3 Fixed in 26.3 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 18.7.5VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 18.7.5VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*14.0 to before 14.8.4; 26.0 to before 26.3VulnerableApple
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*before 26.3VulnerableApple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 18.7.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 18.7.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 14.0 to before 14.8.4; 26.0 to before 26.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions before 26.3 Vulnerable ·Apple

Remediation

  • Fix · CNA iOS and iPadOS (Apple) Fixed in 18.7.5
  • Fix · CNA macOS (Apple) Fixed in 14.8.4, 26.3
  • Fix · CNA visionOS (Apple) Fixed in 26.3

Fixed in the same release

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

  • Release ·

    Apple visionOS 26.3

    26 records Highest priority Priority CRITICAL 1 CRITICAL, 4 MEDIUM, 21 LOW

    Other records, highest priority first

    • TI-2026-16755 Memory corruption in Apple iOS and iPadOSPriority CRITICAL 93
    • TI-2026-16733 Time-of-check time-of-use race condition in Apple iOS and iPadOSPriority MEDIUM 41
    • TI-2026-16709 Uncontrolled resource consumption in Apple SafariPriority MEDIUM 40
    Show all 26 records →
  • Release ·

    Apple iOS and iPadOS 18.7.5

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-16729 Apple iOS and iPadOS: Turning off "Load remote content in messages” may not apply to all…Priority LOW 30
    • TI-2026-16662 Memory corruption in Apple iOS and iPadOSPriority LOW 21
    • TI-2026-16713 Improper authorization in Apple SafariPriority LOW 15
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-20616
  2. 2026-10-03 Alias added: GHSA-6xrf-46c8-4wmj
  3. 2026-10-21 EPSS moved to the 50th–90th percentile

References

Advisory 4

  • 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