CVE-2018-4140

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-04-03 · updated 2026-06-17
Weakness: CWE-476

Description

An issue was discovered in certain Apple products. iOS before 11.3 is affected. The issue involves the "Telephony" component. It allows remote attackers to cause a denial of service (NULL pointer dereference and reboot) via a Class 0 SMS message.

Affected products

Apple Iphone Os: before 11.3 — fixed in 11.3

How to fix

Upgrade to a fixed version: Apple Iphone Os 11.3. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/103578
http://www.securitytracker.com/id/1040604
https://support.apple.com/HT208693
http://www.securityfocus.com/bid/103578
http://www.securitytracker.com/id/1040604
https://support.apple.com/HT208693

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