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CVE-2023-40447

24
FAUCET Score

CVE-2023-40447 is a memory handling vulnerability affecting Apple's iOS, iPadOS, watchOS, macOS, Safari, and tvOS that could lead to arbitrary code execution when processing malicious web content. With a CVSS score of 8.8 (High), it presents a significant risk due to its network-based attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability impacts. While no active exploitation, public exploit code, or significant community discussion has been observed, the vulnerability has been addressed in recent Apple updates.

Impacted Technologies

VendorProductVersion(s)CPE
< 17.1CPE matchmatch criteria
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
< 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:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.52%
Probability of exploitation in next 30 days
EPSS Percentile
71.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0152 is in the 71st percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 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 0.1 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/22
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/25
Mailing ListThird Party Advisory
seclists.org / fulldisclosure/2023/Oct/27
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/HT213984
Release NotesVendor Advisory
support.apple.com / en-us/HT213986
Release NotesVendor Advisory
support.apple.com / en-us/HT213987
Release NotesVendor Advisory
support.apple.com / en-us/HT213988
Release NotesVendor Advisory
support.apple.com / kb/HT213984