# CVE-2023-42916: Apple Multiple Products WebKit Out-of-Bounds Read Vulnerability

Source: https://junglewise.ai/threats/cve-2023-42916-apple-multiple-products-webkit-out-of-bounds-read-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-12-04. Updated: 2026-05-09  
License: CC BY 4.0 with a link back

CVE-2023-42916 · Severity: critical · CVSS 6.5 · Exploited in the wild · Published 2023-12-04

An out-of-bounds read vulnerability in the WebKit engine allows for the disclosure of sensitive information when processing maliciously crafted web content. The issue was addressed through improved input validation in multiple Apple operating systems and the Safari browser.

Technologies: [Apple Multiple Products](https://junglewise.ai/threats/technologies/multiple-products). Vendors: [Apple](https://junglewise.ai/threats/vendors/apple).

## Quick answers

**Is CVE-2023-42916 exploited in the wild?** Yes. CVE-2023-42916 is known to be exploited in the wild, first recorded on 4 December 2023. Treat it as urgent.

**How severe is CVE-2023-42916?** Critical severity, with a CVSS score of 6.5, published 4 December 2023.

**Which products and versions are affected?** Apple WebKit Versions before iOS 17.1.2, iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2; Apple iOS before 17.1.2; Apple iPadOS before 17.1.2; Apple macOS Sonoma before 14.1.2; and 1 more.

**Is there a fix for CVE-2023-42916?** A patch was published on 2023-11-30: Apple released updates for iOS, iPadOS, macOS, and Safari. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2023-42916 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2023-42916?** Check whether you run Apple Multiple Products. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Apple WebKit Versions before iOS 17.1.2, iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2
- Apple iOS before 17.1.2
- Apple iPadOS before 17.1.2
- Apple macOS Sonoma before 14.1.2
- Apple Safari before 17.1.2

## Timeline

- 2023-11-30: patched: Apple released updates for iOS, iPadOS, macOS, and Safari.
- 2023-12-04: disclosed: CVE-2023-42916 published.
- 2023-12-04: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
- 2023-12-04: exploited: Apple reported awareness of exploitation against versions of iOS before 16.7.1.

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