SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-4363

An input validation issue existed in the kernel.

MEDIUM 5.5EPSS 0.96%

Does this matter?

Lower severity and a low EPSS score (0.96%). Track it; it rarely justifies an emergency change on its own.

Description

An input validation issue existed in the kernel. This issue was addressed with improved input validation. This issue affected versions prior to iOS 12, tvOS 12, watchOS 5.

CVSS 3.0
5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS
0.96% probability · 61th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-20
Affected
apple/iphone os · apple/tvos · apple/watchos
Source
product-security@apple.com
EPSS trend
0%3%5%27 October 2026: 0.96%27 October 202627 October 2026

EPSS 1.0% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

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