Read the docs
TI-2018-03327 Aliases CVE-2018-4381GHSA-fhhr-6q8c-w2wf

Uncontrolled resource consumption in Apple iOS

Priority LOW 26CWE-400Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

A resource exhaustion issue was addressed with improved input validation. This issue is fixed in tvOS 12.1, iOS 12.1. Processing a maliciously crafted message may lead to a denial of service.

Why it matters now

EPSS 0.00614 49th percentileScored 2026-11-07
Fix Fixed iOS (Apple): 12.1tvOS (Apple): 12.1

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
AppleiOSbefore 12.112.1Patch availableCNA
AppletvOSbefore 12.112.1Patch availableCNA
  • iOS VendorApple Affected before 12.1 Fixed in 12.1 Patch available CNA
  • tvOS VendorApple Affected before 12.1 Fixed in 12.1 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 12.1VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 12.1VulnerableApple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 12.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 12.1 Vulnerable ·Apple

Remediation

  • Fix · CNA iOS (Apple) Fixed in 12.1
  • Fix · CNA tvOS (Apple) Fixed in 12.1

Fixed in the same release

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

  • Release ·

    Apple iOS 12.1

    7 records Highest priority Priority MEDIUM 1 MEDIUM, 6 LOW

    Other records, highest priority first

    • TI-2019-05178 Apple iOS: A thorough security audit of the FaceTime service uncovered an issue with Live…Priority MEDIUM 45
    • TI-2019-06146 Apple iOS: Processing maliciously crafted web content may disclose sensitive user…Priority LOW 34
    • TI-2018-03388 Apple iOS: Processing maliciously crafted web content may disclose sensitive user…Priority LOW 31
    Show all 7 records →
  • Release ·

    Apple tvOS 12.1

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-06146 Apple iOS: Processing maliciously crafted web content may disclose sensitive user…Priority LOW 34
    • TI-2018-03388 Apple iOS: Processing maliciously crafted web content may disclose sensitive user…Priority LOW 31
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-4381
  2. 2026-10-03 Alias added: GHSA-fhhr-6q8c-w2wf

References

Advisory 2

  • 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