CVE-2023-42866
High
Published: 10 January 2024
Published
10 January 2024
Modified
03 June 2025
KEV Added
—
Patch
—
CVSS Score v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score
0.0048
65.4th percentile
Risk Priority
18
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2023-42866 is a high-severity an unspecified weakness vulnerability in Apple Safari. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 34.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-47287
Vulnerability details
The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, tvOS 16.6, Safari 16.6, watchOS 9.6. Processing web content may lead to arbitrary code execution.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
apple
safari
≤ 16.6
apple
ipados
≤ 16.6
apple
iphone os
≤ 16.6
apple
macos
≤ 13.5
apple
tvos
≤ 16.6
apple
watchos
≤ 9.6
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.