SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-4192

It allows remote attackers to execute arbitrary code via a crafted web site that leverages a race condition.

EXPLOITHIGH 7.5EPSS 11.8%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 11.8%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

Description

An issue was discovered in certain Apple products. iOS before 11.4 is affected. Safari before 11.1.1 is affected. iCloud before 7.5 on Windows is affected. iTunes before 12.7.5 on Windows is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code via a crafted web site that leverages a race condition.

CVSS 3.0
7.5 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
11.76% probability · 96th percentile
Public exploits
1 in Exploit-DB · first 11 July 2018
CISA KEV
Not listed
Weakness
CWE-362
Affected
apple/safari · apple/iphone os · apple/tvos · apple/watchos · apple/icloud · apple/itunes
Source
product-security@apple.com
EPSS trend
0%8%15%21 September 2026: 13.37%22 September 2026: 12.32%27 October 2026: 11.76%21 September 202627 October 2026

EPSS moved from 13.4% on 21 September 2026 to 11.8% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-45048source ↗JavaScript Core - Arbitrary Code Executionmultiple · ret2local11 July 2018no

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