CVE Watch—

CVE-2023-42917

Apple Multiple Products WebKit Memory Corruption Vulnerability

CVSS

—

No CVSS

EPSS

9.4%

p95

KEV

YES

Dec 4, 2023

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

9.4%EPSS · 30 days9.4%

2026-06-302026-07-16

KEV catalog record

Product

Apple / Multiple Products

Vulnerability

Apple Multiple Products WebKit Memory Corruption Vulnerability

Added to KEV

Dec 4, 2023

Remediate by

Dec 25, 2023

Known ransomware use

Summary description

Apple iOS, iPadOS, macOS, and Safari WebKit contain a memory corruption vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

Required action

Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Notes

https://support.apple.com/en-us/HT214031, https://support.apple.com/en-us/HT214032, https://support.apple.com/en-us/HT214033 ; https://nvd.nist.gov/vuln/detail/CVE-2023-42917

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