$ cve CVE-2023-42917 JSON

CVE-2023-42917 KEV

8.8

HIGH · CVSS 3.1 · EPSS 9.3% (pctl 95)

Patch first

On CISA KEV — known exploited in the wild, due 2023-12-25.

Description

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.

Scoring

CVSS	8.8 (HIGH, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS	9.3% — more likely to be exploited than 95% of all CVEs
Weakness	CWE-787
On CISA KEV	yes — remediate by 2023-12-25
Public exploit	none known
Published	2023-11-30
Last modified	2026-06-17

CISA KEV

Name	Apple Multiple Products WebKit Memory Corruption Vulnerability
Added	2023-12-04
Due	2023-12-25
Vendor / product	Apple / Multiple Products
Ransomware use	none reported

Affected (7)

Vendor	Product
apple	ipados
apple	iphone os
apple	macos
apple	safari
debian	debian linux
fedoraproject	fedora
webkitgtk	webkitgtk\+

References

→ the Explorer · watch your stack · NVD