$ cve CVE-2018-4222 JSON

CVE-2018-4222 EXPLOIT

8.8

HIGH · CVSS 3.0 · EPSS 10.4% (pctl 96)

Patch early

A public exploit exists.

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 getWasmBufferFromValue out-of-bounds read during WebAssembly compilation.

Scoring

CVSS	8.8 (HIGH, v3.0)
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS	10.38% — more likely to be exploited than 96% of all CVEs
Weakness	CWE-125
On CISA KEV	no
Public exploit	yes
Published	2018-06-08
Last modified	2026-06-17

Affected (8)

Vendor	Product
apple	icloud
apple	iphone os
apple	itunes
apple	safari
apple	tvos
apple	watchos
canonical	ubuntu linux
microsoft	windows

Public exploits

Source	Title	Date
exploit-db	WebKit - WebAssembly Compilation Info Leak	2018-06-08

References

→ the Explorer · watch your stack · NVD