What’s Vulnerable › Vulnerabilities

CVE-2018-4381

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-27 · updated 2026-06-17
• Weakness: CWE-400

Description

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.

Affected products

• Apple Iphone Os: before 12.1 — fixed in 12.1
• Apple tvOS: before 12.1 — fixed in 12.1

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.1; Apple tvOS 12.1. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT209192
• https://support.apple.com/en-us/HT209194
• https://support.apple.com/en-us/HT209192
• https://support.apple.com/en-us/HT209194

Get alerted when CVE-2018-4381 or the next vulnerability affects your stack