SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-4330

In iOS before 11.4, a memory corruption issue exists and was addressed with improved memory handling.

HIGH 7.8EPSS 3.09%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.09%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

In iOS before 11.4, a memory corruption issue exists and was addressed with improved memory handling.

CVSS 3.0
7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
3.09% probability · 88th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-119
Affected
apple/iphone os
Source
product-security@apple.com
EPSS trend
0%3%5%21 September 2026: 4.86%22 September 2026: 3.09%27 October 2026: 3.09%21 September 202627 October 2026

EPSS moved from 4.9% on 21 September 2026 to 3.1% on 27 October 2026.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.