HIGHCVSS v3.1 8.8Actively exploited · CISA KEV since 2023-12-04Vulnerability

CVE-2023-42917

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.

Properties

Euvd product
iOS and iPadOS, macOS, Safari
Vulnerability name
Apple Multiple Products WebKit Memory Corruption Vulnerability
First seen
2025-10-21T23:05:31+00:00
Cvss score
8.8
Epss score
0.09295
Last seen
2026-10-19T12:00:27+00:00
Due date
2023-12-25
Euvd assigner
apple
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2023-12-04T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2023-12-04
Score
8.8
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Apple
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
8.8

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CVE-2023-42917 (CVSS v3.1 8.8) — Ninja Signal Threat Intelligence | Ninja Signal