Is CVE-2023-42917 actively exploited?

CVE-2023-42917 has no public evidence of in-the-wild exploitation as of 2025-10-23.

What is the CVSS score for CVE-2023-42917?

CVE-2023-42917 has a CVSS score of 8.8 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

How do I patch CVE-2023-42917?

Patch guidance is available from apple security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-42917.

Fix CVE-2023-42917 - HIGH apple safari

Q: Which products are affected by CVE-2023-42917?

13 products: apple safari, apple ipados, apple ipados, apple ipados, apple iphone os, and 8 more.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: required
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-787 · Out-of-bounds Write CWE-787 · Out-of-bounds Write

Metadata

Primary Vendor: APPLE
Published: 11/30/2023
Last Modified: 10/23/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

apple : safariapple : ipadosapple : ipadosapple : ipadosapple : iphone_osapple : iphone_osapple : iphone_osapple : macosdebian : debian_linuxdebian : debian_linuxfedoraproject : fedorafedoraproject : fedorawebkitgtk : webkitgtk\+

Remediation Guidance

Executive Summary

View on NIST NVD