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CVE-2023-40423

22
FAUCET Score

CVE-2023-40423 is a memory handling vulnerability affecting Apple's iOS, iPadOS, and macOS, which could allow an application to execute arbitrary code with kernel privileges. This high-severity vulnerability (CVSS 7.8) requires user interaction (UI:R) for a local attacker (AV:L) to achieve full confidentiality, integrity, and availability impact (C:H/I:H/A:H). There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 16.7.2CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
>= 17.0, < 17.1CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
< 16.7.2CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
>= 17.0, < 17.1CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
>= 12.0.0, < 12.7.1CPE matchmatch criteria
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.45%
Probability of exploitation in next 30 days
EPSS Percentile
36.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0045 is in the 37th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

seclists.org / fulldisclosure/2023/Oct/19
Mailing ListThird Party Advisory
seclists.org / fulldisclosure/2023/Oct/21
Mailing ListThird Party Advisory
seclists.org / fulldisclosure/2023/Oct/23
Mailing ListThird Party Advisory
seclists.org / fulldisclosure/2023/Oct/24
Mailing ListThird Party Advisory
seclists.org / fulldisclosure/2023/Oct/26
Mailing ListThird Party Advisory
support.apple.com / en-us/HT213981
Release NotesVendor Advisory
support.apple.com / en-us/HT213982
Release NotesVendor Advisory
support.apple.com / en-us/HT213983
Release NotesVendor Advisory
support.apple.com / en-us/HT213984
Release NotesVendor Advisory
support.apple.com / en-us/HT213985
Release NotesVendor Advisory
support.apple.com / kb/HT213981
Release NotesVendor Advisory
support.apple.com / kb/HT213982
Release NotesVendor Advisory
support.apple.com / kb/HT213983
Release NotesVendor Advisory
support.apple.com / kb/HT213984
Release NotesVendor Advisory
support.apple.com / kb/HT213985
Release NotesVendor Advisory