CVE Watch—

CVE-2023-42916

Apple Multiple Products WebKit Out-of-Bounds Read Vulnerability

CVSS

—

No CVSS

EPSS

17.8%

p97

KEV

YES

Dec 4, 2023

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

17.8%EPSS · 30 days17.8%

2026-09-162026-10-14

KEV catalog record

Product

Apple / Multiple Products

Vulnerability

Apple Multiple Products WebKit Out-of-Bounds Read 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 an out-of-bounds read vulnerability that may disclose sensitive information 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-2023-42916

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-869508.8 HIG

68.6%

KEV—71Apple Multiple Products Out-of-Bounds Write Vulnerability14d CVE-2025-435298.8 HIG

95.1%

KEV—79Apple Multiple Products Use-After-Free WebKit Vulnerability9d CVE-2025-435205.5 MED

35.2%

KEV—61Apple Multiple Products Classic Buffer Overflow Vulnerability9d CVE-2025-435107.8 HIG

27.6%

KEV—58Apple Multiple Products Improper Locking Vulnerability9d CVE-2023-430008.8 HIG

90.5%

KEV—77Apple Multiple products Use-After-Free Vulnerability24d CVE-2025-312778.8 HIG

75.3%

KEV—73Apple Multiple Products Buffer Overflow Vulnerability24d