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CVE-2023-42917

Published: Nov 30, 2023Updated: Oct 23, 2025 Sources: CVE List NVD BDUCWE-787
NVD MITRE
8.8CVSSHIGH
EPSS Score
9.4%
Top 5.2%
CISA KEV
Active Exploitation
Since Dec 4, 2023
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-787

Affected Products

iOSApple Inc.
EmbeddedOS
Operating Systems / mobile-os
iPadOSApple Inc.
OS
Operating Systems / mobile-os
SafariApple Inc.
Desktop App
Consumer Software / browser
MacOSApple Inc.
On-premOS
Operating Systems / unix-bsd
ОСОН ОСнова ОnyxАО «НППКТ»
On-premOS
Operating Systems / linux-distro
apple inc.commercialUSMobile Appsaka apple
ао «нппкт»commercialRUOperating Systems
and 10 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Dec 4, 2023
Remediation due:Dec 25, 2023

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

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://support.apple.com/en-us/HT214031
support.apple.com
https://support.apple.com/en-us/HT214033
support.apple.com
https://nvd.nist.gov/vuln/detail/CVE-2023-42917
nvd.nist.gov
and 19 more references View all →

Timeline

Published
Nov 30, 2023
Added to CISA KEV
Dec 4, 2023
Last Updated
Oct 23, 2025

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