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CVE-2023-32434

86
FAUCET Score

CVE-2023-32434 is an integer overflow vulnerability in the XNU kernel affecting Apple's iOS, iPadOS, macOS, and watchOS. This flaw allows an application to execute arbitrary code with kernel privileges due to insufficient input validation. It carries a high CVSS score of 7.8, indicating a significant risk of complete compromise of confidentiality, integrity, and availability. Apple has confirmed active exploitation of this zero-day vulnerability, particularly against older iOS versions, and it has garnered substantial community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 15.7.7CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
>= 16.0, < 16.5.1CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
< 15.7.7CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
>= 16.0, < 16.5.1CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
>= 11.0, < 11.7.8CPE 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
51.52%
Probability of exploitation in next 30 days
EPSS Percentile
98.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Jun 23, 2023
This CVE's current EPSS score of 0.5152 is in the 99th percentile among its peer group of 11,617 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

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

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
seclists.org / fulldisclosure/2023/Oct/20
Mailing ListThird Party Advisory
support.apple.com / en-us/HT213808
Vendor Advisory
support.apple.com / en-us/HT213809
Vendor Advisory
support.apple.com / en-us/HT213810
Vendor Advisory
support.apple.com / en-us/HT213811
Vendor Advisory
support.apple.com / en-us/HT213812
Vendor Advisory
support.apple.com / en-us/HT213813
Vendor Advisory
support.apple.com / en-us/HT213814
Vendor Advisory
support.apple.com / kb/HT213990
Vendor Advisory