Is CVE-2023-42917 actively exploited?

Yes. CVE-2023-42917 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2023-42917 be exploited remotely?

The attack vector of CVE-2023-42917 has not been classified yet.

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

CVE-2023-42917 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2023-42917

HIGHCISA KEVIN THE WILD

CVE-2023-42917

Published: December 4, 2023

EPSS:0.07%probability of exploitation in 30 daysPercentile:20.8th

Official 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.

NVD Source

CISA KEV Advisory

Apple Multiple Products WebKit Memory Corruption Vulnerability

Added to KEV: 2023-12-04Federal patch deadline: 2023-12-25

Required Action (CISA)

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

Technical Analysis

CVE-2023-42917 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2023-42917 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.